NAudio.Midi 3.2.0-preview.1

NAudio.Midi

Nuget

MIDI support for NAudio. Dual-targets net9.0 (cross-platform: the MIDI event model and file reader/writer) and net9.0-windows10.0.19041.0 (adds WinRT live MIDI I/O on Windows).

What's included

  • MidiFile for reading Standard MIDI Files (SMF)
  • MidiEventCollection and MidiEvent hierarchy (NoteEvent, NoteOnEvent, ControlChangeEvent, PatchChangeEvent, TempoEvent, TimeSignatureEvent, MetaEvent, SysexEvent, …)
  • MidiFileWriter helpers to produce MIDI files from a MidiEventCollection
  • Enumerations for General MIDI patches, drum notes, controller numbers, etc.
  • Windows only: WinRTMidiIn / WinRTMidiOut — live MIDI input and output backed by the WinRT Windows.Devices.Midi API (present only in the net9.0-windows build; the cross-platform net9.0 build omits them)

What's not here

Sending or receiving live MIDI through the legacy winmm-backed MidiIn / MidiOut uses the Windows Multimedia API and lives in the NAudio.WinMM package. (The WinRT-backed WinRTMidiIn / WinRTMidiOut above are the modern alternative and ship here.)

See the NAudio documentation site for tutorials and the full API reference, or the GitHub repository for full documentation and tutorials on working with MIDI files and events.

License

MIT.

Showing the top 20 packages that depend on NAudio.Midi.

Packages Downloads
NAudio
NAudio, an audio library for .NET
 23
NAudio
NAudio, an audio library for .NET
 21
NAudio
NAudio, an audio library for .NET
 20
NAudio.WinMM
winmm.dll-based Windows audio APIs (WaveOut, WaveIn, MidiIn, MidiOut, ACM) for the NAudio audio library.
 19
NAudio
NAudio, an audio library for .NET
 18
NAudio
NAudio is an open source .NET audio library — playback and recording, file readers and writers, MIDI, DSP and effects, with platform-specific backends auto-selected by target framework.
 18
NAudio
NAudio, an audio library for .NET
 17
NAudio
NAudio is an open source .NET audio library — playback and recording, file readers and writers, MIDI, DSP and effects, with platform-specific backends auto-selected by target framework.
 17
NAudio.WinMM
winmm.dll-based Windows audio APIs (WaveOut, WaveIn, MidiIn, MidiOut, ACM) for the NAudio audio library.
 17
NAudio
NAudio, an audio library for .NET
 16
NAudio.Wasapi
WASAPI playback and capture (including loopback and process loopback) and WinRT MIDI for the NAudio audio library.
 16
NAudio
NAudio is an open source .NET audio library — playback and recording, file readers and writers, MIDI, DSP and effects, with platform-specific backends auto-selected by target framework.
 16
NAudio.WinMM
winmm.dll-based Windows audio APIs (WaveOut, WaveIn, MidiIn, MidiOut, ACM) for the NAudio audio library.
 16
NAudio.WinMM
winmm.dll-based Windows audio APIs (WaveOut, WaveIn, MidiIn, MidiOut, ACM) for the NAudio audio library.
 15
NAudio
NAudio is an open source .NET audio library — playback and recording, file readers and writers, MIDI, DSP and effects, with platform-specific backends auto-selected by target framework.
 15

  • Deprecated legacy APIs that have modern replacements: Wave16ToFloatProvider, WaveFloatTo16Provider and Wave32To16Stream (use ToSampleProvider() / ToWaveProvider16()), IgnoreDisposeStream (no longer needed), ByteArrayExtensions (use the BCL), MidiMessage (use the typed MIDI events), ResamplerDmoStream/DmoResampler (use MediaFoundationResampler or WdlResamplingSampleProvider), DmoEffectWaveProvider and the Dmo* effects (use NAudio.Effects), AsioOut's recording path (use AsioDevice), WaveFilter, and ProgressLog. Added AsioOut.IsSupported() and deprecated the lowercase isSupported()
  • Deprecated WaveFileReader.ReadNextSampleFrame in favour of ToSampleProvider(), which supports more formats and doesn't allocate an array per sample frame
  • Fixed WaveFileWriter.WriteSample and WriteSamples(short[]) throwing for plain (non-extensible) 32-bit integer PCM formats
  • WaveFileReader.ReadNextSampleFrame now throws InvalidDataException for a WAV header with an invalid channel count or bit depth
  • Reduced allocations when reading and writing WAV files, added ReadOnlySpan<byte> overloads of WaveFileWriter.AddChunk and ChunkIdentifier.ChunkIdentifierToInt32, and fixed WaveChunks.GetData leaving the stream position changed when a read fails. ChunkIdentifierToInt32 now throws ArgumentOutOfRangeException for identifiers that aren't four bytes (#1457)
  • Changed the WaveStream.CurrentTime setter to clamp to the bounds of the stream, and corrected the XML documentation for the core audio interfaces (#1441)
  • Fixed DirectSoundOut failing every playback with DirectSoundException 0x80004001 (or an ArgumentException for a format with extra data, e.g. one read from a WAV by WaveFileReader): the secondary buffer's WAVEFORMATEX was still a GCHandle-pinned WaveFormat instance — a site missed in the #1432 marshalling conversion, since WaveFormat no longer carries [StructLayout] — and now marshals via WaveFormat.MarshalToPtr
  • Fixed WasapiPlayer and WasapiOut being stranded in the Playing state, unable to play again, when the source's Read threw or the source ended before the first buffer was filled (#1442)
  • macOS support (preview) - A new wrappers library is added wrapping macOS native API's for playback/recording, reading/writing files and resampling audio. The NAudio.MacOS package ships pre-release only (X.Y.Z-preview.N) while its API settles, so it stays pre-release alongside stable releases of the other packages. Special thanks to @mdcdi1315 (#1325) for the work and the tests. For more information, see the design doc that describes the decisions that helped shape the wrappers. (#1398)
  • Reworked the macOS CoreAudioPlayer and CoreAudioRecorder non-interleaved path, used for devices that expose one mono stream per channel; the recorder now also drains buffered audio when stopped, and non-interleaved streams carrying more than one channel are rejected explicitly (preview) (#1461)
  • ExtendedAudioFileServicesReader.CurrentTime and TotalTime on macOS now throw ObjectDisposedException after the reader is disposed, rather than a native exception (preview) (#1451)
  • VB.NET support - Added SampleProviderBase and WaveProviderBase, base classes that keep the NAudio 2 Read(buffer, offset, count) signature for languages that cannot name a Span<T> in a method signature, and a Using NAudio from VB.NET guide covering playback, recording and custom providers from VB (#1426)
  • Refreshed the NuGet package icon, now rendered from the new SVG version of the NAudio logo as a sharper, square 256×256 PNG (#1467)

.NET 9.0

.NET 9.0

Version Downloads Last updated
3.3.0-preview.1 2 10/17/2026
3.2.0 2 10/15/2026
3.2.0-preview.1 4 10/14/2026
3.1.1-preview.2 12 09/22/2026
3.1.1-preview.1 14 09/10/2026
3.1.0 9 09/09/2026
3.1.0-preview.2 11 09/05/2026
3.1.0-preview.1 10 09/04/2026
3.0.2-preview.2 14 08/31/2026
3.0.2-preview.1 13 08/20/2026
3.0.1 15 08/18/2026
3.0.1-preview.1 10 08/18/2026
3.0.0 15 08/16/2026
3.0.0-preview.20 15 08/10/2026
3.0.0-preview.19 20 07/28/2026
3.0.0-preview.18 19 07/16/2026
3.0.0-preview.17 21 07/16/2026
3.0.0-preview.16 21 07/01/2026
3.0.0-preview.15 21 07/01/2026
3.0.0-preview.14 18 06/26/2026
3.0.0-preview.10 22 06/12/2026
3.0.0-preview.9 26 05/30/2026
3.0.0-preview.8 20 05/30/2026
3.0.0-preview.7 21 05/30/2026
3.0.0-preview.6 13 05/30/2026
3.0.0-preview.5 20 05/30/2026
3.0.0-preview.4 20 05/30/2026
3.0.0-preview.3 18 05/30/2026
3.0.0-preview.2 24 05/30/2026
2.4.0 13 09/01/2026
2.3.0 19 05/30/2026
2.2.1 20 05/30/2026
2.2.0 20 05/30/2026
2.1.0 19 05/30/2026
2.1.0-beta.1 21 05/30/2026
2.0.1 22 05/30/2026
2.0.0 20 05/30/2026
2.0.0-beta2 19 05/30/2026
2.0.0-beta1 22 05/30/2026