Difference between revisions of "NVGate DSP computation SPU"
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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). | 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). | ||
=== Advanced understanding of computation SPU for force DSP=== | |||
Forget what you | |||
To understand the Force DSP computation. Let's explain on a more advanced way. | |||
The | |||
Revision as of 14:51, 15 February 2022
SPU computation is only working for normal DSP : OR34 V1 - Or35V1 - OR36V1 OR36V22 (normal DSP) - OR38V1 - OR38V2 (Normal DSP).
Concerning the "force DSP", it is NOT possible to compute the SPUs loading computation. This is because the computation SPU is not linear.
FFT
Computation SPUs:
| Bandwidth | Fdec | Resolution | Envelope | Zoom | SPU/Channel for Real-time |
SPU/Channel for non Real-time |
| 20k | 1 | 401 | No | No | 1 | 0,5 |
| 10k | 1 | 401 | No | No | 0,5 | 0,25 |
| Nk | 1 | 401 | No | No | =N/20 | =N/40 |
| 10k | 2 | 401 | No | No | 1 | 1 |
| 5k | 4 | 401 | No | No | 0,8 | 0,6 |
| 2k | 10 | 401 | No | No | 0,6 | 0,6 |
| 1k | 20 | 401 | No | No | 0,5 | 0,6 |
| Lower than 1k |
Higher than 20 |
401 | No | No | 0,5 | 0,5 |
| 20k | 1 | 401 and below |
No | No | 1 | 0,5 |
| 20k | 1 | 801 | No | No | 1,25 | 0,5 |
| 20k | 1 | 1601 | No | No | 1,5 | 0,5 |
| 20k | 1 | 3201 | No | No | 2 | 0,5 |
| 20k | 1 | 6401 | No | No | 3 | 0,5 |
| 20k | 1 | 401 | No | No | 1 | 0,5 |
| 20k | 1 | 401 | No | Yes | 2 | 1,5 |
| 20k | 1 | 401 | No | No | 1 | 0,5 |
| 20k | 1 | 401 | Yes | Yes | 3 | 3 |
SOA
Computation SPUs:
| Bandwidth (Hz) | Decimation factor | Resolution | SPU/Channel |
| 20 k | 1 | 401 | 3 |
| 10 k | 1 | 401 | 1,5 |
| N k | 1 | 401 | =(N*3)/20 |
| 10 k | 2 | 401 | 2 |
| 5 k | 4 | 401 | 1,3 |
| 2,5 k | 8 | 401 | 1,1 |
| 1,25 k | 16 | 401 | 0,9 |
| 625 | 32 | 401 | 0,8 |
| 313 | 64 | 401 | 0,7 |
| 156 | 128 | 401 | 0,6 |
| 78 | 256 | 401 | 0,6 |
| 20 k | 1 | 401 and below | 3 |
| 20 k | 1 | 801 | 3,25 |
Sampling Frequency: set in Front-End/Inputs settings/Input sampling
FFT Bandwidth: set in FFTx/FFT analysis/range
==
Octave:
| Bandwidth | Fdec | Reso | SPU/Channel for Real-time |
| 25.6k | 1 | 1/3rd | 4 |
| 20k | 1 | 1/3rd | 3 |
| 12.8k | 1 | 1/3rd | 2 |
| 10k | 1 | 1/3rd | 1,5 |
| 20k | 1 | 1/3rd | 3,0 |
| 10k | 2 | 1/3rd | 2,0 |
| 5k | 4 | 1/3rd | 1,25 |
| 20k | 1 | 1/1 | 1,5 |
| 20k | 1 | 1/3rd | 3 |
| 20k | 1 | 1/12th | 6 |
| 20k | 1 | 1/24th | 12 |
Sampling Frequency: set in Front-End/Inputs settings/Input sampling
1/N Oct Bandwidth: set in OCT/FFT analysis/range
OVA
| Bandwidth | SPU/Channel for Real-time |
| 25,6k | 1,25 |
| 20k | 1 |
| 12,8k | 0,75 |
| 10k | 0,5 |
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).
Advanced understanding of computation SPU for force DSP
Forget what you To understand the Force DSP computation. Let's explain on a more advanced way.
The