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Update: coherence picture

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Peter.Yang 2018-03-12 10:05:37 +00:00
parent 829ae64abe
commit d6744a76d2
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README.md
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@ -224,7 +224,7 @@ capturing must be start first, or else the capturing channels will miss order.**
### Coherence ### Coherence
Estimate the magnitude squared coherence using Welch’s method. Estimate the magnitude squared coherence using Welch’s method.
![4-mics-linear-array-kit coherence](https://user-images.githubusercontent.com/3901856/37268469-2869dd34-2601-11e8-9a4e-a831b3af82fe.png) ![4-mics-linear-array-kit coherence](https://user-images.githubusercontent.com/3901856/37277486-beb1dd96-261f-11e8-898b-84405bfc7cea.png)
Note: 'CO 1-2' means the coherence between channel 1 and channel 2. Note: 'CO 1-2' means the coherence between channel 1 and channel 2.
```bash ```bash
@ -232,8 +232,8 @@ Note: 'CO 1-2' means the coherence between channel 1 and channel 2.
sudo apt install python-numpy python-scipy python-matplotlib sudo apt install python-numpy python-scipy python-matplotlib
python tools/coherence.py a.wav python tools/coherence.py a.wav
Requirement of the input audio file: # Requirement of the input audio file:
- formt: WAV(Microsoft) signed 16-bit PCM - format: WAV(Microsoft) signed 16-bit PCM
- channels: >=2 - channels: >=2
``` ```