PCM WAV Waveform Image Generator

How to use PCM WAV Waveform Image Generator

Make a compact waveform picture from actual PCM samples without uploading or playing audio. Every source sample contributes to a horizontal min/max bin, preserving narrow sample peaks rather than selecting one arbitrary sample per image column.

1. Choose a supported local WAV or load the original generated chirp.
2. Set the image and analysis options, then run locally.
3. Read the explicit scales and report; download the original image.

Good to know

• One ordinary uncompressed PCM16 WAV, mono/stereo, 8–192 kHz, at most 10 MiB, 120 seconds and 2,880,000 frames. RF64, compressed/float/extensible WAV and malformed chunks are refused. No browser audio decoder or microphone access.
• A local module Worker gets 10 seconds for preparation and 2 seconds for computation. Image output is limited to 1400 by 800 pixels; decoded sample processing and FFT work are bounded. No upload, playback, account or saved history.
• Normalized signed PCM sample amplitude is plotted, not interpolated analog amplitude, true peak, LUFS or calibrated sound pressure. Mean stereo can cancel opposite-polarity channels. The SVG uses fixed generated labels and no external resources.