Add parse_wav function for WAV header metadata extraction#1242
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Audio processing workflows often need to inspect WAV file metadata (sample rate, channels, bit depth) without loading the entire audio data into memory. This is particularly useful for validation, preprocessing decisions, or building dataset catalogs where full audio decoding would be unnecessarily expensive. This adds a new `parse_wav()` function that efficiently extracts WAV header information without decoding audio samples. The function returns a strongly-typed `WAVHeader` TypedDict containing all standard WAV metadata fields (`audio_format`, `num_channels`, `sample_rate`, `byte_rate`, `block_align`, `bits_per_sample`, `data_size`). The implementation includes comprehensive test coverage (13 test cases) validating all header fields across different audio configurations, error handling for invalid data, and consistency checks against the existing `load_wav` function.
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Audio processing workflows often need to inspect WAV file metadata (sample rate, channels, bit depth) without loading the entire audio data into memory. This is particularly useful for validation, preprocessing decisions, or building dataset catalogs where full audio decoding would be unnecessarily expensive.
This adds a new
parse_wav()function that efficiently extracts WAV header information without decoding audio samples. The function returns a strongly-typedWAVHeaderTypedDict containing all standard WAV metadata fields (audio_format,num_channels,sample_rate,byte_rate,block_align,bits_per_sample,data_size).The implementation includes comprehensive test coverage (13 test cases) validating all header fields across different audio configurations, error handling for invalid data, and consistency checks against the existing
load_wavfunction.