# Record wav and perform FFT

**Repository Path**: chanshu0508/record-wav-and-perform-fft

## Basic Information

- **Project Name**: Record wav and perform FFT
- **Description**: Record an `.wav` file and perform fast fourier transform on it.

- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 1
- **Created**: 2021-10-12
- **Last Updated**: 2022-12-08

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# Record .wav audio file and perform FFT

> A small task of my *Theory and Design for Mechanical Measurement* class.

## Environment

- Python `3.8.10`
- NumPy `1.20.3`
- Matplotlib `3.3.4`
- SciPy `1.7.1`
- PyAudio `0.2.11`

## Usage

Record an `.wav` file(length and filename decided by yourself) and perform ***fast fourier transform*** on it.

## How to use

In the console:

```bash
python3 main.py audio_length filename
```

Attension:

- `audio_length` should be an interger `>= 1`
- `filename` should not with the `.wav` file format

For example:

```bash
python3 main.py 3 test_audio  # record a 3-second-long named test_audio.wav file
```

## Effection

The following example shows the output of the time and frequency domain of a recording file of "dou" sound.

![time](/images/Figure_1.png)

![freq](/images/Figure_2.png)

## References

- [Fourier Transforms With scipy.fft: Python Signal Processing](https://realpython.com/python-scipy-fft/)
- [Playing and Recording Sound in Python](https://realpython.com/playing-and-recording-sound-python/)