Difference between revisions of "NVGate DSP computation SPU"

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[[category:WikiOros]]
<!-- NVGate DSP Computation SPU — Wiki page -->
= Force DSP=


{{#widget:CalculateurSPU}}
<!-- ── HEADER ──────────────────────────────────────────── -->
<div style="background:linear-gradient(135deg,#0A1628,#0057A8,#0082CC);border-radius:10px;padding:28px 28px;margin-bottom:20px;">
<div style="font-family:Arial,sans-serif;font-size:1.8em;font-weight:700;color:#fff;letter-spacing:1px;">⚙️ NVGate — <span style="color:#F07800;">DSP Computation SPU</span></div>
<div style="color:rgba(255,255,255,0.75);font-size:0.88em;margin-top:8px;font-family:Arial,sans-serif;">Reference tables for Signal Processing Unit (SPU) consumption per channel and per analysis type.</div>
</div>
 
<!-- ── KEY CONCEPT ─────────────────────────────────────── -->
<div style="background:#FFF8F0;border-left:4px solid #F07800;border-radius:0 8px 8px 0;padding:14px 18px;margin-bottom:20px;font-family:Arial,sans-serif;font-size:0.88em;">
💡 <strong>Key principle:</strong> The higher the sampling frequency, the more data to process — and the fewer SPUs are available per DSP board. SPU budget must be shared across all active channels and analysis types.
</div>


<!-- ── DSP MODE OVERVIEW ────────────────────────────────── -->
{| style="width:100%;border-collapse:separate;border-spacing:10px;margin-bottom:8px;"
|-
| style="width:50%;background:#EEF4FF;border:2px solid #0057A8;border-radius:10px;padding:14px 18px;vertical-align:top;" |
<div style="font-family:Arial,sans-serif;font-weight:700;font-size:1em;color:#0057A8;margin-bottom:6px;">🔵 Normal DSP</div>
<div style="font-family:Arial,sans-serif;font-size:0.82em;color:#1A2340;">Models: OR34 V1 · OR35 V1 · OR36 V1/V2 · OR38 V1/V2<br/>Computation is <strong>linear</strong>: <strong>1 DSP = 12 SPU</strong>, regardless of sampling frequency.</div>
| style="width:50%;background:#FFF3E6;border:2px solid #F07800;border-radius:10px;padding:14px 18px;vertical-align:top;" |
<div style="font-family:Arial,sans-serif;font-weight:700;font-size:1em;color:#F07800;margin-bottom:6px;">🟠 Force DSP</div>
<div style="font-family:Arial,sans-serif;font-size:0.82em;color:#1A2340;">SPU count <strong>varies with sampling frequency</strong>. Higher frequency = fewer available SPUs. Force DSP generally requires <strong>2.5× to 5× fewer SPUs</strong> per channel than Normal DSP.</div>
|}


On force DSP (and normal DSP), the number of SPU change according to the max sampling frequency.
<!-- ── SPU AVAILABILITY (FORCE & NORMAL DSP) ──────────── -->
== 📊 SPU Availability vs. Sampling Frequency ==


The more you have data to analyse (high sampling frequency), the less you have power computation (SPU).  
<small style="font-family:Arial,sans-serif;color:#6B7A99;">Applies to both Force DSP and Normal DSP modes.</small>
We have:


{| class="wikitable"
{| class="wikitable" style="width:50%;margin-top:8px;"
|-
! Sampling Frequency (kHz) !! SPU per DSP board
! Sampling Frequency (kHz) !! Number of SPU / DSP (Normal or Force)
|-
|-
| 102.4 || 6
| 102.4 || 6
Line 35: Line 52:
|}
|}


===FFT===
{{#widget:CalculateurSPU}}
According to the architecture of force DSP, the SPU computation per channels is not linear.  So we have the following table for real time SPU computation :


{| class="wikitable"
----
|-
 
! Number of FFT lines !! Normal DSP: SPU / channel !! Force DSP: SPU / channel
<!-- ══════════════════════════════════════════════════════
    FFT
══════════════════════════════════════════════════════ -->
== 🔬 FFT ==
 
<!-- Force DSP note -->
<div style="background:#FFF3E6;border-left:4px solid #F07800;border-radius:0 8px 8px 0;padding:8px 14px;margin-bottom:10px;font-family:Arial,sans-serif;font-size:0.82em;">
⚠️ <strong>Force DSP note:</strong> Computation is not linear. FFT 801 lines is the most optimised configuration. Envelope (401 lines) = 2 SPU/ch · Zoom (401 lines) = 0.66 SPU/ch.
</div>
 
{| class="wikitable" style="width:100%;"
! FFT Lines !! 🔵 Normal DSP (SPU/ch) !! 🟠 Force DSP (SPU/ch)
|-
|-
| 401 ||1 || 0.33
| 401 || 1 || 0.33
|-
|-
| 801 || 1.25 || 0.18 (yes<sup>1</sup>)
| 801 || 1.25 || 0.18 <sup>①</sup>
|-
|-
| 1601 || 1.5 || 0.75
| 1 601 || 1.5 || 0.75
|-
|-
| 3201 || 2 || 0.8
| 3 201 || 2 || 0.8
|-
|-
| 6401 || 3 || 2
| 6 401 || 3 || 2
|-
|-
| 12801 || 4 || 2
| 12 801 || 4 || 2
|-
|-
| 25601 || 6 || 3.5
| 25 601 || 6 || 3.5
|}
|}
<small style="font-family:Arial,sans-serif;color:#6B7A99;">① 801 lines is the most optimised resolution for Force DSP.</small>


Envelope: 401 lines : 2 SPU per channel on force DSP
<!-- Normal DSP FFT detail -->
 
<div style="background:#EEF4FF;border-left:4px solid #0057A8;border-radius:0 8px 8px 0;padding:10px 14px;margin-top:14px;margin-bottom:10px;font-family:Arial,sans-serif;font-size:0.82em;">
Zoom: 401 Lines : 0.66 SPU per channel on force DSP.
🔵 <strong>Normal DSP — bandwidth & options effect</strong> (401 lines, Fdec=1 as base)
</div>


1) Computing is not linear and FFT 801 lines is the most optimised for DSP
{| class="wikitable" style="width:100%;"
 
! Bandwidth !! Fdec !! Resolution !! Envelope !! Zoom !! SPU/ch (real-time) !! SPU/ch (non real-time)
===Recorder===
 
{| class="wikitable"
|-
|-
! Recorder Sampling frequency (Hz) !! Normal DSP: SPU / channel !! Force DSP: SPU / channel
| 20 kHz || 1 || 401 || No || No || 1 || 0.5
|-
|-
| 51200 or upper || 1 || 0.66
| 10 kHz || 1 || 401 || No || No || 0.5 || 0.25
|-
|-
| 32768 || 0.66 || 0.44
| N kHz || 1 || 401 || No || No || = N/20 || = N/40
|-
|-
| 25600 || 0.5 || 0.33
| 10 kHz || 2 || 401 || No || No || 1 || 1
|-
|-
| 16384 || 0.33 || 0.22
| 5 kHz || 4 || 401 || No || No || 0.8 || 0.6
|-
|-
| 12800 || 0.25 || 0.167
| 2 kHz || 10 || 401 || No || No || 0.6 || 0.6
|-
|-
| Else || 0.125 || 0.083
| 1 kHz || 20 || 401 || No || No || 0.5 || 0.6
|}
 
===Octave===
 
{| class="wikitable"
|-
! Octave !! Normal DSP: SPU / channel !! Force DSP: SPU / channel
|-
|-
| 1/3 || 3 || 1
| < 1 kHz || > 20 || 401 || No || No || 0.5 || 0.5
|-
|-
| 1/12 || 6 || 2
| 20 kHz || 1 || 801 || No || No || 1.25 || 0.5
|-
|-
| 1/24 || 12 || 4
| 20 kHz || 1 || 1 601 || No || No || 1.5 || 0.5
|}
 
===OVA===
 
{| class="wikitable"
|-
|-
! Normal DSP: SPU / channel !! Force DSP: SPU / channel
| 20 kHz || 1 || 3 201 || No || No || 2 || 0.5
|-
|-
| 1 || 0.25
| 20 kHz || 1 || 6 401 || No || No || 3 || 0.5
|}
 
===TDA===
 
 
{| class="wikitable"
|-
|-
! Normal DSP: SPU / channel !! Force DSP: SPU / channel
| 20 kHz || 1 || 401 || No || Yes || 2 || 1.5
|-
|-
| 3 || 1.5
| 20 kHz || 1 || 401 || Yes || Yes || 3 || 3
|}
|}


===SOA===
[[Image:fft_sampling.png|500px|none]]


SPU computation for SOA is more complex because it depends of maximum speed, resolution and frequency. Also force DSP computation is not linear.
----


Force DSP will improve the SPU computation by reducing between  2.5 and 5 to compare with normal DSP.
<!-- ══════════════════════════════════════════════════════
    RECORDER
══════════════════════════════════════════════════════ -->
== 🎙️ Recorder ==


(@20kHz - 401 lines, we need a maximum of 3 SPUs with normal DSP)
<small style="font-family:Arial,sans-serif;color:#6B7A99;">Force DSP only.</small>
 
= Normal DSP=
SPU computation for normal DSP : OR34 V1 - OR35V1 - OR36V1 OR36V2 (normal DSP) - OR38V1 - OR38V2 (Normal DSP).
 
Because of the computation linearity, we simplify by saying:  1DSP = 12 SPU (no matter the sampling frequency). This allow a simplification for SPU computation. So we can deduce:
 
==FFT==
 
'''Computation SPUs:'''
 
{|class="wikitable" style="background:white"border="2" cellspacing="0" cellpadding="4" width="85%" align="center"
|'''Bandwidth'''
|'''Fdec'''
|'''Resolution'''
|'''Envelope'''
|'''Zoom'''
|'''SPU/Channel <br>for Real-time'''
|'''SPU/Channel <br>for non Real-time'''


{| class="wikitable" style="width:70%;"
! Recorder Sampling Frequency (Hz) !! 🔵 Normal DSP (SPU/ch) !! 🟠 Force DSP (SPU/ch)
|-
| ≥ 51 200 || 1 || 0.66
|-
| 32 768 || 0.66 || 0.44
|-
| 25 600 || 0.5 || 0.33
|-
|-
|20k
| 16 384 || 0.33 || 0.22
|1
|401
|No
|No
|1
|0,5
 
|-
|-
|10k
| 12 800 || 0.25 || 0.167
|1
|401
|No
|No
|0,5
|0,25
 
|-
|-
|Nk
| Other || 0.125 || 0.083
|1
|}
|401
|No
|No
|=N/20
|=N/40


|-
----
|10k
|2
|401
|No
|No
|1
|1


|-
<!-- ══════════════════════════════════════════════════════
|5k
    OCTAVE
|4
══════════════════════════════════════════════════════ -->
|401
== 🎵 Octave ==
|No
|No
|0,8
|0,6


|-
'''Force DSP — summary:'''
|2k
|10
|401
|No
|No
|0,6
|0,6


{| class="wikitable" style="width:50%;"
! Resolution !! 🔵 Normal DSP (SPU/ch) !! 🟠 Force DSP (SPU/ch)
|-
|-
|1k
| 1/3 oct || 3 || 1
|20
|401
|No
|No
|0,5
|0,6
 
|-
|-
|Lower <br>than 1k
| 1/12 oct || 6 || 2
|Higher <br>than 20
|401
|No
|No
|0,5
|0,5
 
|-
|-
|20k
| 1/24 oct || 12 || 4
|1
|}
|401 and<br>below
|No
|No
|1
|0,5


|-
'''Normal DSP — full detail:'''
|20k
|1
|801
|No
|No
|1,25
|0,5


{| class="wikitable" style="width:70%;"
! Bandwidth !! Fdec !! Resolution !! SPU/ch (real-time)
|-
|-
|20k
| 25.6 kHz || 1 || 1/3 oct || 4
|1
|1601
|No
|No
|1,5
|0,5
 
|-
|-
|20k
| 20 kHz || 1 || 1/3 oct || 3
|1
|3201
|No
|No
|2
|0,5
 
|-
|-
|20k
| 12.8 kHz || 1 || 1/3 oct || 2
|1
|6401
|No
|No
|3
|0,5
 
|-
|-
|20k
| 10 kHz || 1 || 1/3 oct || 1.5
|1
|401
|No
|No
|1
|0,5
 
|-
|-
|20k
| 10 kHz || 2 || 1/3 oct || 2
|1
|401
|No
|Yes
|2
|1,5
 
|-
|-
|20k
| 5 kHz || 4 || 1/3 oct || 1.25
|1
|401
|No
|No
|1
|0,5
 
|-
|-
|20k
| 20 kHz || 1 || 1/1 oct || 1.5
|1
|401
|Yes
|Yes
|3
|3
 
|}<br clear="all">
 
 
[[Image:fft_sampling.png|500px|none]]
 
==SOA==
Computation SPUs:<br>
 
{|class="wikitable" style="background:white" border="2" cellspacing="0" cellpadding="4" width="79%" align="center"
|align = "center"|'''Bandwidth (Hz)'''
|align = "center"|'''Decimation factor'''
|align = "center"|'''Resolution'''
|align = "center"|'''SPU/Channel'''
 
|-
|-
|align = "center"|20 k
| 20 kHz || 1 || 1/12 oct || 6
|align = "center"|1
|align = "center"|401
|align = "center"|3
 
|-
|-
|align = "center"|10 k
| 20 kHz || 1 || 1/24 oct || 12
|align = "center"|1
|}
|align = "center"|401
|align = "center"|1,5


|-
<small style="font-family:Arial,sans-serif;color:#6B7A99;">Sampling Frequency: ''Front-End / Inputs settings / Input sampling'' · Bandwidth: ''OCT / FFT analysis / range''</small>
|align = "center"|N k
|align = "center"|1
|align = "center"|401
|align = "center"|=(N*3)/20


|-
[[Image:Octave_01.png|framed|none]]
|align = "center"|10 k
|align = "center"|2
|align = "center"|401
|align = "center"|2


|-
----
|align = "center"|5 k
|align = "center"|4
|align = "center"|401
|align = "center"|1,3


|-
<!-- ══════════════════════════════════════════════════════
|align = "center"|2,5 k
    OVA
|align = "center"|8
══════════════════════════════════════════════════════ -->
|align = "center"|401
== 📈 OVA (Overall Acoustic Levels) ==
|align = "center"|1,1


|-
'''Force DSP:'''
|align = "center"|1,25 k
|align = "center"|16
|align = "center"|401
|align = "center"|0,9


{| class="wikitable" style="width:40%;"
! 🔵 Normal DSP (SPU/ch) !! 🟠 Force DSP (SPU/ch)
|-
|-
|align = "center"|625
| 1 || 0.25
|align = "center"|32
|}
|align = "center"|401
|align = "center"|0,8


|-
'''Normal DSP — by bandwidth:'''
|align = "center"|313
|align = "center"|64
|align = "center"|401
|align = "center"|0,7


{| class="wikitable" style="width:50%;"
! Bandwidth !! SPU/ch (real-time)
|-
|-
|align = "center"|156
| 25.6 kHz || 1.25
|align = "center"|128
|align = "center"|401
|align = "center"|0,6
 
|-
|-
|align = "center"|78
| 20 kHz || 1
|align = "center"|256
|align = "center"|401
|align = "center"|0,6
 
|-
|-
|align = "center"|20 k
| 12.8 kHz || 0.75
|align = "center"|1
|align = "center"|401 and below
|align = "center"|3
 
|-
|-
|align = "center"|20 k
| 10 kHz || 0.5
|align = "center"|1
|}
|align = "center"|801
|align = "center"|3,25


|}<br clear="all">
<small style="font-family:Arial,sans-serif;color:#6B7A99;">SPU count is directly proportional to analysis bandwidth (sampling frequency ÷ 2.56).</small>


[[Image:Order_analysis_19.png|framed|none]]
----


Sampling Frequency: set in ''Front-End/Inputs settings/Input sampling''
<!-- ══════════════════════════════════════════════════════
    TDA
══════════════════════════════════════════════════════ -->
== ⏱️ TDA ==


FFT Bandwidth: set in ''FFTx/FFT analysis/range''
{| class="wikitable" style="width:40%;"
! 🔵 Normal DSP (SPU/ch) !! 🟠 Force DSP (SPU/ch)
|-
| 3 || 1.5
|}


==
----


==Octave:==
<!-- ══════════════════════════════════════════════════════
    SOA
══════════════════════════════════════════════════════ -->
== 🔄 SOA (Order Analysis) ==


{|class="wikitable" style="background:white" border="2" cellspacing="0" cellpadding="4" width="61%" align="center"
<div style="background:#FFF3E6;border-left:4px solid #F07800;border-radius:0 8px 8px 0;padding:8px 14px;margin-bottom:12px;font-family:Arial,sans-serif;font-size:0.82em;">
|'''Bandwidth'''
⚠️ SOA computation depends on <strong>maximum speed, resolution and frequency</strong>. Force DSP computation is non-linear and reduces SPU consumption by <strong>2.5× to 5×</strong> vs Normal DSP.<br/>
|'''Fdec'''
<em>Example: @20 kHz, 401 lines → max 3 SPU/ch with Normal DSP.</em>
|'''Reso'''
</div>
|'''SPU/Channel <br>for Real-time'''


|-
'''Normal DSP — SOA detail:'''
|25.6k
|1
|1/3rd
|4


{| class="wikitable" style="width:70%;"
! Bandwidth (Hz) !! Decimation !! Resolution !! SPU/ch
|-
|-
|20k
| 20 kHz || 1 || 401 || 3
|1
|1/3rd
|3
 
|-
|12.8k
|1
|1/3rd
|2
 
|-
|-
|10k
| 10 kHz || 1 || 401 || 1.5
|1
|1/3rd
|1,5
 
|-
|-
|20k
| N kHz || 1 || 401 || = (N × 3) / 20
|1
|1/3rd
|3,0
 
|-
|-
|10k
| 10 kHz || 2 || 401 || 2
|2
|1/3rd
|2,0
 
|-
|-
|5k
| 5 kHz || 4 || 401 || 1.3
|4
|1/3rd
|1,25
 
|-
|-
|20k
| 2.5 kHz || 8 || 401 || 1.1
|1
|1/1
|1,5
 
|-
|-
|20k
| 1.25 kHz || 16 || 401 || 0.9
|1
|1/3rd
|3
 
|-
|-
|20k
| 625 Hz || 32 || 401 || 0.8
|1
|1/12th
|6
 
|-
|-
|20k
| 313 Hz || 64 || 401 || 0.7
|1
|1/24th
|12
 
|}<br clear="all">
 
[[Image:Octave_01.png|framed|none]]
 
Sampling Frequency: set in ''Front-End/Inputs settings/Input sampling''
 
1/N Oct Bandwidth: set in ''OCT/FFT analysis/range''
 
==OVA==
 
{|class="wikitable" style="background:white" border="2" cellspacing="0" cellpadding="4" width="52%"
|align = "center"|'''Bandwidth'''
|align = "center"|'''SPU/Channel <br>for Real-time'''
 
|-
|-
|align = "center"|25,6k
| 156 Hz || 128 || 401 || 0.6
|align = "center"|1,25
 
|-
|-
|align = "center"|20k
| 78 Hz || 256 || 401 || 0.6
|align = "center"|1
 
|-
|-
|align = "center"|12,8k
| 20 kHz || 1 || 801 || 3.25
|align = "center"|0,75
|}


|-
<small style="font-family:Arial,sans-serif;color:#6B7A99;">Sampling Frequency: ''Front-End / Inputs settings / Input sampling'' · FFT Bandwidth: ''FFTx / FFT analysis / range''</small>
|align = "center"|10k
|align = "center"|0,5


|}
[[Image:Order_analysis_19.png|framed|none]]


The overall acoustic levels analysis requires 1 SPU per channel at 20 kHz bandwidth. The number of required SPUs is directly proportional to the analysis bandwidth (i.e. the sampling frequency divided by 2.56).
[[Category:WikiOros]]

Revision as of 10:06, 2 April 2026


⚙️ NVGate — DSP Computation SPU
Reference tables for Signal Processing Unit (SPU) consumption per channel and per analysis type.

💡 Key principle: The higher the sampling frequency, the more data to process — and the fewer SPUs are available per DSP board. SPU budget must be shared across all active channels and analysis types.

🔵 Normal DSP
Models: OR34 V1 · OR35 V1 · OR36 V1/V2 · OR38 V1/V2
Computation is linear: 1 DSP = 12 SPU, regardless of sampling frequency.
🟠 Force DSP
SPU count varies with sampling frequency. Higher frequency = fewer available SPUs. Force DSP generally requires 2.5× to 5× fewer SPUs per channel than Normal DSP.

📊 SPU Availability vs. Sampling Frequency

Applies to both Force DSP and Normal DSP modes.

Sampling Frequency (kHz) SPU per DSP board
102.4 6
65.536 9
51.2 12
32.768 18
25.6 24
16.384 36
12.8 48
6.4 96
3.2 192
1.6 384

{{#widget:CalculateurSPU}}

🔬 FFT

⚠️ Force DSP note: Computation is not linear. FFT 801 lines is the most optimised configuration. Envelope (401 lines) = 2 SPU/ch · Zoom (401 lines) = 0.66 SPU/ch.

FFT Lines 🔵 Normal DSP (SPU/ch) 🟠 Force DSP (SPU/ch)
401 1 0.33
801 1.25 0.18 ①
1 601 1.5 0.75
3 201 2 0.8
6 401 3 2
12 801 4 2
25 601 6 3.5

① 801 lines is the most optimised resolution for Force DSP.

🔵 Normal DSP — bandwidth & options effect (401 lines, Fdec=1 as base)

Bandwidth Fdec Resolution Envelope Zoom SPU/ch (real-time) SPU/ch (non real-time)
20 kHz 1 401 No No 1 0.5
10 kHz 1 401 No No 0.5 0.25
N kHz 1 401 No No = N/20 = N/40
10 kHz 2 401 No No 1 1
5 kHz 4 401 No No 0.8 0.6
2 kHz 10 401 No No 0.6 0.6
1 kHz 20 401 No No 0.5 0.6
< 1 kHz > 20 401 No No 0.5 0.5
20 kHz 1 801 No No 1.25 0.5
20 kHz 1 1 601 No No 1.5 0.5
20 kHz 1 3 201 No No 2 0.5
20 kHz 1 6 401 No No 3 0.5
20 kHz 1 401 No Yes 2 1.5
20 kHz 1 401 Yes Yes 3 3
Fft sampling.png

🎙️ Recorder

Force DSP only.

Recorder Sampling Frequency (Hz) 🔵 Normal DSP (SPU/ch) 🟠 Force DSP (SPU/ch)
≥ 51 200 1 0.66
32 768 0.66 0.44
25 600 0.5 0.33
16 384 0.33 0.22
12 800 0.25 0.167
Other 0.125 0.083

🎵 Octave

Force DSP — summary:

Resolution 🔵 Normal DSP (SPU/ch) 🟠 Force DSP (SPU/ch)
1/3 oct 3 1
1/12 oct 6 2
1/24 oct 12 4

Normal DSP — full detail:

Bandwidth Fdec Resolution SPU/ch (real-time)
25.6 kHz 1 1/3 oct 4
20 kHz 1 1/3 oct 3
12.8 kHz 1 1/3 oct 2
10 kHz 1 1/3 oct 1.5
10 kHz 2 1/3 oct 2
5 kHz 4 1/3 oct 1.25
20 kHz 1 1/1 oct 1.5
20 kHz 1 1/12 oct 6
20 kHz 1 1/24 oct 12

Sampling Frequency: Front-End / Inputs settings / Input sampling · Bandwidth: OCT / FFT analysis / range

Octave 01.png

📈 OVA (Overall Acoustic Levels)

Force DSP:

🔵 Normal DSP (SPU/ch) 🟠 Force DSP (SPU/ch)
1 0.25

Normal DSP — by bandwidth:

Bandwidth SPU/ch (real-time)
25.6 kHz 1.25
20 kHz 1
12.8 kHz 0.75
10 kHz 0.5

SPU count is directly proportional to analysis bandwidth (sampling frequency ÷ 2.56).

⏱️ TDA

🔵 Normal DSP (SPU/ch) 🟠 Force DSP (SPU/ch)
3 1.5

🔄 SOA (Order Analysis)

⚠️ SOA computation depends on maximum speed, resolution and frequency. Force DSP computation is non-linear and reduces SPU consumption by 2.5× to 5× vs Normal DSP.
Example: @20 kHz, 401 lines → max 3 SPU/ch with Normal DSP.

Normal DSP — SOA detail:

Bandwidth (Hz) Decimation Resolution SPU/ch
20 kHz 1 401 3
10 kHz 1 401 1.5
N kHz 1 401 = (N × 3) / 20
10 kHz 2 401 2
5 kHz 4 401 1.3
2.5 kHz 8 401 1.1
1.25 kHz 16 401 0.9
625 Hz 32 401 0.8
313 Hz 64 401 0.7
156 Hz 128 401 0.6
78 Hz 256 401 0.6
20 kHz 1 801 3.25

Sampling Frequency: Front-End / Inputs settings / Input sampling · FFT Bandwidth: FFTx / FFT analysis / range

Order analysis 19.png
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