IMA to WV Converter

Archive IMA audio as lossless WV format online

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Settings

Set the number of audio channels. This setting is most useful when downmixing channels (e.g., from 5.1 to stereo).
Set the sample rate of the audio. Music with a full spectrum (20 Hz — 20 kHz) requires values not lower than 44.1 kHz to achieve transparency. More info can be found on the wiki.
Adjust the audio volume by selecting a number of decibels. For example, -10 dB decreases the volume by 10 decibels.

ima

IMA ADPCM (Adaptive Differential Pulse-Code Modulation) is a compact audio coding standard published by the Interactive Multimedia Association in 1992, addressing the need for a lightweight, royalty-free compression scheme suitable for early multimedia PCs and embedded devices. The algorithm encodes each sample as a 4-bit nibble representing the quantized difference from the previous sample, while an adaptive step-size table adjusts dynamically to track signal amplitude — delivering a fixed 4:1 compression ratio over 16-bit PCM. Decoding requires only an integer multiply-add per sample and a small lookup table, so even modest 1990s CPUs could decompress in real time without dedicated DSP. The format became deeply embedded in the multimedia landscape: Microsoft adopted it as a standard ACM codec for WAV files, game engines relied on it for sound effects, and telephony equipment used it for voice storage. Its advantages are enduring: predictable 4:1 size reduction simplifies buffer allocation in constrained environments, the decode path runs on 8-bit microcontrollers, and the open specification made IMA ADPCM one of the most broadly implemented audio codecs in computing history.
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wv

WavPack is an open-source audio codec created by David Bryant, with version 1.0 released on August 15, 1998. What sets WavPack apart is its unique hybrid mode: the encoder can simultaneously produce a compact lossy file and a separate correction file that, when combined, reconstruct the original PCM stream bit-for-bit. Users who need portability carry just the lossy file; those who want archival quality keep both. The codec handles PCM audio from 8-bit to 32-bit integer and 32-bit floating point, with sample rates up to 768 kHz — specifications broad enough for DSD content, which WavPack 5 added support for. Compression ratios in pure lossless mode typically reach 40 to 55 percent of the original size, competitive with FLAC and often slightly better on certain material. Multicore encoding in later versions dramatically speeds up processing on modern hardware. The open-source library ships under a BSD license and has been integrated into foobar2000, VLC, FFmpeg, and numerous other tools. WavPack also supports rich metadata through APEv2 tags, embedded cue sheets, and ReplayGain values, covering the organizational needs of even the most meticulous music library.
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Gaming and embedded to WV

Transform IMA recordings into WV — bringing headerless audio into a format with real-world usability.

Safe Conversion

Uploaded IMA files are deleted after conversion. All WV outputs are automatically erased within 24 hours from servers.

Cross-Platform

Run the converter on any operating system or device. The web-based tool adapts to your screen automatically.

How to convert IMA to WV

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose wv or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your wv file right afterwards

About formats

IMA ADPCM (Adaptive Differential Pulse-Code Modulation) is a compact audio coding standard published by the Interactive Multimedia Association in 1992, addressing the need for a lightweight, royalty-free compression scheme suitable for early multimedia PCs and embedded devices. The algorithm encodes each sample as a 4-bit nibble representing the quantized difference from the previous sample, while an adaptive step-size table adjusts dynamically to track signal amplitude — delivering a fixed 4:1 compression ratio over 16-bit PCM. Decoding requires only an integer multiply-add per sample and a small lookup table, so even modest 1990s CPUs could decompress in real time without dedicated DSP. The format became deeply embedded in the multimedia landscape: Microsoft adopted it as a standard ACM codec for WAV files, game engines relied on it for sound effects, and telephony equipment used it for voice storage. Its advantages are enduring: predictable 4:1 size reduction simplifies buffer allocation in constrained environments, the decode path runs on 8-bit microcontrollers, and the open specification made IMA ADPCM one of the most broadly implemented audio codecs in computing history.
Initial release: 1992
WavPack is an open-source audio codec created by David Bryant, with version 1.0 released on August 15, 1998. What sets WavPack apart is its unique hybrid mode: the encoder can simultaneously produce a compact lossy file and a separate correction file that, when combined, reconstruct the original PCM stream bit-for-bit. Users who need portability carry just the lossy file; those who want archival quality keep both. The codec handles PCM audio from 8-bit to 32-bit integer and 32-bit floating point, with sample rates up to 768 kHz — specifications broad enough for DSD content, which WavPack 5 added support for. Compression ratios in pure lossless mode typically reach 40 to 55 percent of the original size, competitive with FLAC and often slightly better on certain material. Multicore encoding in later versions dramatically speeds up processing on modern hardware. The open-source library ships under a BSD license and has been integrated into foobar2000, VLC, FFmpeg, and numerous other tools. WavPack also supports rich metadata through APEv2 tags, embedded cue sheets, and ReplayGain values, covering the organizational needs of even the most meticulous music library.
Developer: David Bryant
Initial release: August 15, 1998

Frequently Asked Questions

Why convert IMA to WV?

IMA ADPCM is headerless and hard to use outside embedded systems. WV provides a proper format with broad compatibility.

What applications open WV files?

Foobar2000, VLC, Winamp, and audiophile players can handle WV files. Most are available as free downloads for major operating systems.

Is the conversion lossless?

Yes. WV stores audio without compression loss. Every sample from the IMA source is perfectly preserved in the WV output.

How fast is the conversion?

Both formats produce manageable file sizes. The IMA to WV conversion finishes almost instantly on our infrastructure.

Are my files kept private?

IMA uploads are removed right after processing. All WV output files are cleaned from servers within 24 hours.

Do I need to register?

No account required. Upload your file, convert, and download the result directly from your browser at convertio.co.

IMA to WV Quality Rating

4.0 (1 votes)
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