🔊 audio 🔊

Prerequisites

Run pip install -r requirements.txt

The program

The program consists of two components: the main C++ source file (main.cc), which performs the data extraction bit-by-bit, and the Python source (plot.py) which visualizes the extracted data.

Running the program

After navigating to the 'src' directory, use the main program by running:

make; ./audio <path_to_file> -info <info>

For the Python visualization component, run:

py plot.py

All results are stored in the 'output' directory.

Example usage

A simple example of using the program is running ./audio ../test_audio/mono.wav followed by py plot.py. Some other examples, using additional command line arguments, are:

./audio ../test_audio/song.wav -info chunk_size
./audio ../test_audio/mono.wav -info num_samples

The -info switch can take the following arguments: chunk_size, format_type, num_channels, sample_rate, avg_bps, bytes_per_sample, bits_per_sample, data_size, length, num_samples

Other notes

• This command-line tool only works on RIFF audio data (i.e the '.wav' file extension).
• The plot only shows the first 5000 samples to save computation time, as the audio signal is periodic.