DVI ADPCM Decoder

A focused decoding tool for DVI ADPCM streams on Ubuntu, designed for developers and audio engineers to extract PCM data quickly.

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1,364+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how DVI ADPCM Decoder processes input data instantly inside your browser.

Sample Input Minified string: {"id":1,"status":"active","roles":["admin"]}

Computed Result

{
  "id": 1,
  "status": "active",
  "roles": [
    "admin"
  ]
}

Execution Mode Client-Side In-Browser JS

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About This Tool

This tool decodes DVI ADPCM bitstreams into PCM samples on Ubuntu. It is designed for developers, DSP engineers, and researchers who need reliable sample extraction for playback, analysis, or conversion workflows. It supports common DVI ADPCM variants found in legacy media and telecommunication assets, and it outputs 16-bit little-endian PCM by default. The decoding process follows standard predictor and step-size adaptation, operating on one or two channels and producing a deterministic sequence of PCM samples. Conceptually, input data is parsed, decoded per sample using a variant-specific state, and written to the chosen output format. Users benefit from precise control over sample rate, channel count, and output format, enabling seamless integration into audio processing pipelines and test environments. Core differentiators include strict input validation, streaming-friendly processing to manage large inputs, and optional WAV header generation for immediate playback. This tool focuses on domain logic, not UI aspects, and emphasizes reproducibility and transparency of decoding steps. Typical use cases include format migration, data recovery from archival materials, and benchmarking of decoders within Ubuntu-centric development stacks.

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How to Use

Provide inputs: input_data (file or base
, variant, sample_rate_hz, channels. Choose output: output_format (RAW or WAV) and optional bit-depth. Run decoding: initiate the process to produce pcm_data and duration_s. Review results: examine duration_s, samples_decoded, and metadata; verify PCM integrity. If WAV is chosen, use the headered output for immediate playback.

Frequently Asked Questions

Find Quick Answers

What formats are supported by the decoder?

The tool supports common DVI ADPCM dialects used in legacy audio and telephony data. Variant selection adjusts initial predictor values and step-size behavior to match the input stream, ensuring accurate PCM reconstruction.

How should input data be supplied?

Input can be provided as a file path or as a base64-encoded binary string. The decoder validates non-empty input and the specified variant before processing.

What are the output options?

Outputs include RAW PCM (16-bit little-endian) and WAV with a standard PCM header. RAW yields pure samples, while WAV includes metadata suitable for playback in common audio tools.

Are there any limits on sample rate or channels?

Yes. Supported sample rates range 8000–48000 Hz and channel counts are 1 or 2. Requests outside these ranges result in a structured error and metadata indicating the issue.

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