Module wav

Expand description

WAV file reading and writing for audio recording and playback.

Supports 16-bit PCM mono WAV files at any sample rate (typically 8000 Hz for telephony).

Structs§

compute_snr: Compute the signal-to-noise ratio (SNR) in dB between original and received audio. Higher values mean better fidelity. Typical telephony: >20 dB is acceptable.
cross_correlation: Compute normalized cross-correlation between two signals. Returns a value between -1.0 and 1.0. Values > 0.9 indicate strong similarity.
decode_wav: Read PCM samples from WAV bytes.
encode_wav: Write PCM samples to a WAV file (in memory as bytes).
generate_multi_tone: Generate a multi-tone signal with distinct frequencies (for fidelity testing).
generate_sine_tone: Generate a sine wave tone (for testing).
max_sample_error: Compute the maximum absolute sample-by-sample error.
read_wav: Read PCM samples from a WAV file on disk.
rms_error: Compute root-mean-square error between two signals.
write_wav: Write PCM samples to a WAV file on disk.