Repository Analysis

naudio/NAudio

Audio and MIDI library for .NET

6.1 Low AI signal View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of naudio/NAudio, a C# project with 6,213 GitHub stars. SynthScan v2.0 examined 178,762 lines of code across 1343 source files, recording 1025 pattern matches distributed across 4 syntactic categories. The overall adjusted score of 6.1 places this repository in the Low AI signal band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

6.1
Adjusted Score
6.1
Raw Score
100%
Time Factor
2026-08-28
Last Push
6.2K
Stars
C#
Language
178.8K
Lines of Code
1.3K
Files
1.0K
Pattern Hits
2026-08-29
Scan Date
0.01
HC Hit Rate

What These Metrics Mean

Adjusted Score
Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score
The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor
The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits
Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate
High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files
Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

Longitudinal tracking requires multiple scan runs. Once this repository is re-scanned after new commits land, this chart will visualise how the synthetic code signal evolves over time — enabling you to detect whether AI authorship is growing, stabilising, or being actively corrected by human engineers.

No multi-scan history yet — run the scanner again to build trend data.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 0HIGH 17MEDIUM 9LOW 999

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 1025 distinct pattern matches across 4 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Over-Commented Block999 hits · 940 pts
SeverityFileLineSnippetContext
LOW….Core.Tests/Sequencing/SequencedSampleProviderTests.cs161COMMENT
LOWtests/NAudio.Core.Tests/Utils/SyntheticMp3.cs1using System;COMMENT
LOW….Core.Tests/Utils/FrameStampingMp3FrameDecompressor.cs1using System;COMMENT
LOWtests/NAudio.Core.Tests/Mp3/Mp3FileReaderSeekTests.cs1using System;COMMENT
LOWtests/NAudioAotSmokeTest/Program.cs21// IAudioEndpointVolumeCallback (via AudioEndpointVolume.OnVolumeNotification),COMMENT
LOWtests/NAudio.Benchmarks/AsioCallbackBenchmarks.cs1using System.Runtime.InteropServices;COMMENT
LOWtests/NAudio.Benchmarks/VolumeBenchmarks.cs1using System.Numerics.Tensors;COMMENT
LOWtests/NAudio.Sampler.Tests/SamplerBenchmarks.cs1using System;COMMENT
LOWtests/MfStressTest/Watchdog.cs1using System.Diagnostics;COMMENT
LOWtests/MfStressTest/Program.cs1using System.Diagnostics;COMMENT
LOWtests/MfStressTest/Phases/EnumStress.cs1using System.Diagnostics;COMMENT
LOWtests/MfStressTest/Phases/Soak.cs1using System.Collections.Concurrent;COMMENT
LOWtests/MfStressTest/Phases/Probe.cs1using System.Diagnostics;COMMENT
LOWtests/MfStressTest/Phases/Probe.cs21 public static List<Combo> Run(Options o, string tempDir)COMMENT
LOWsamples/AudioFileInspector/FileAssociations.cs121COMMENT
LOWsamples/AudioFileInspector/FileAssociations.cs141[Flags]COMMENT
LOWsamples/AudioFileInspector/FileAssociations.cs161 /// <i>dwItem2</i> is not used and should be <see langword="null"/>.COMMENT
LOWsamples/AudioFileInspector/FileAssociations.cs181 SHCNE_DELETE = 0x00000004,COMMENT
LOWsamples/AudioFileInspector/FileAssociations.cs201 /// <summary>COMMENT
LOWsamples/AudioFileInspector/FileAssociations.cs221 SHCNE_FREESPACE = 0x00040000,COMMENT
LOWsamples/AudioFileInspector/FileAssociations.cs241 /// <summary>COMMENT
LOWsamples/AudioFileInspector/FileAssociations.cs261 /// <see cref="HChangeNotifyFlags.SHCNF_PATHA"/> must be specified in <i>uFlags</i>.COMMENT
LOWsamples/AudioFileInspector/FileAssociations.cs281 /// <i>dwItem2</i> contains the new PIDL or name of the item.COMMENT
LOWsamples/AudioFileInspector/FileAssociations.cs301 SHCNE_SERVERDISCONNECT = 0x00004000,COMMENT
LOWsamples/AudioFileInspector/FileAssociations.cs321}COMMENT
LOWsamples/AudioFileInspector/FileAssociations.cs341 SHCNF_IDLIST = 0x0000,COMMENT
LOWsamples/AudioFileInspector/FileAssociations.cs361 /// represent the friendly names of the printer(s) affected by the change.COMMENT
LOWsamples/AudioFileInspector/ReleaseNotes.md1// build 1 - 1 Nov 2006COMMENT
LOWsamples/AudioFileInspector/ReleaseNotes.md21// can report on strc chunks in ACID wav filesCOMMENT
LOWsamples/AudioFileInspector/ReleaseNotes.md41// WAV 64COMMENT
LOW…es/AudioFileInspector/Properties/Resources.Designer.cs1//------------------------------------------------------------------------------COMMENT
LOWsamples/MixDiff/Images.Designer.cs1//------------------------------------------------------------------------------COMMENT
LOWsamples/MixDiff/ReleaseNotes.md1// build 1 19 Oct 2006COMMENT
LOWsamples/MixDiff/ReleaseNotes.md21// build 7 23 Mar 2007COMMENT
LOWsamples/MixDiff/ReleaseNotes.md41COMMENT
LOWsamples/MixDiff/MixDiffForm.Designer.cs181 // toolStripSeparator1COMMENT
LOWsamples/MixDiff/Properties/Resources.Designer.cs1//------------------------------------------------------------------------------COMMENT
LOWsamples/MidiFileConverter/ProgressEventArgs.cs61/// </summary>COMMENT
LOWsamples/MidiFileConverter/ReleaseNotes.md1// build 1 29 Oct 2006COMMENT
LOWsamples/MidiFileConverter/ReleaseNotes.md21// build 3COMMENT
LOWsamples/MidiFileConverter/ReleaseNotes.md41// updated to use new MidiEventCollectionCOMMENT
LOW…les/MidiFileConverter/Properties/Resources.Designer.cs1//------------------------------------------------------------------------------COMMENT
LOW…/NAudioConsoleTest/Vst3/Tests/Vst3SelfRoundtripTest.cs1using System.Globalization;COMMENT
LOW…les/NAudioConsoleTest/Vst3/Tests/Vst3ShowEditorTest.cs1using System.Runtime.InteropServices;COMMENT
LOW…oleTest/Wasapi/Tests/WasapiVolumeCallbackStressTest.cs1using NAudio.CoreAudioApi;COMMENT
LOW…ples/NAudioConsoleTest/Shared/Testing/CliDispatcher.cs1namespace NAudioConsoleTest.Shared.Testing;COMMENT
LOW…/NAudioConsoleTest/Shared/Testing/ConsoleTestRunner.cs1using Spectre.Console;COMMENT
LOW…/NAudioConsoleTest/Shared/Testing/LiveMeterRenderer.cs1namespace NAudioConsoleTest.Shared.Testing;COMMENT
LOWsamples/NAudioConsoleTest/Shared/Testing/MenuPath.cs1namespace NAudioConsoleTest.Shared.Testing;COMMENT
LOW…mples/NAudioConsoleTest/Shared/Testing/MenuRenderer.cs1using Spectre.Console;COMMENT
LOW…ples/NAudioConsoleTest/Shared/Testing/TestParameter.cs1namespace NAudioConsoleTest.Shared.Testing;COMMENT
LOWsamples/NAudioWpfDemo/DemoSettings.cs1using System;COMMENT
LOWsamples/NAudioWpfDemo/SpectrumAnalyser.xaml.cs1using System;COMMENT
LOWsamples/NAudioWpfDemo/SpectrumAnalyser.xaml.cs21/// quietly got wrong):COMMENT
LOWsamples/NAudioWpfDemo/LiveWaveformControl.xaml.cs21{COMMENT
LOW…RealtimeInstrumentDemo/Vst3RealtimeInstrumentEngine.cs1using System;COMMENT
LOW…oWpfDemo/WasapiRecorderDemo/WasapiRecorderViewModel.cs21 CaptureDevice,COMMENT
LOWsamples/NAudioWpfDemo/DrumMachineDemo/ChokeableVoice.cs1using System;COMMENT
LOWsamples/NAudioWpfDemo/DrumMachineDemo/SampleSource.cs41 /// <summary>COMMENT
LOW…ioWpfDemo/Vst3HostDemo/BypassableVst3SampleProvider.cs1using System;COMMENT
939 more matches not shown…
Synthetic Comment Markers17 hits · 128 pts
SeverityFileLineSnippetContext
HIGH…les/AudioFileInspector/Properties/Settings.Designer.cs3// This code was generated by a tool.COMMENT
HIGH…es/AudioFileInspector/Properties/Resources.Designer.cs3// This code was generated by a tool.COMMENT
HIGHsamples/MixDiff/Images.Designer.cs3// This code was generated by a tool.COMMENT
HIGHsamples/MixDiff/Properties/Settings.Designer.cs3// This code was generated by a tool.COMMENT
HIGHsamples/MixDiff/Properties/Resources.Designer.cs3// This code was generated by a tool.COMMENT
HIGH…ples/MidiFileConverter/Properties/Settings.Designer.cs3// This code was generated by a tool.COMMENT
HIGH…les/MidiFileConverter/Properties/Resources.Designer.cs3// This code was generated by a tool.COMMENT
HIGHsamples/NAudioWpfDemo/Properties/Settings.Designer.cs3// This code was generated by a tool.COMMENT
HIGHsamples/NAudioWpfDemo/Properties/Resources.Designer.cs3// This code was generated by a tool.COMMENT
HIGHsamples/NAudioDemo/Images.Designer.cs3// This code was generated by a tool.COMMENT
HIGHsamples/NAudioDemo/Properties/Settings.Designer.cs3// This code was generated by a tool.COMMENT
HIGHsamples/NAudioDemo/Properties/Resources.Designer.cs3// This code was generated by a tool.COMMENT
HIGHsrc/NAudio.WinForms/Gui/VolumeSlider.Designer.cs3// This code was generated by a tool.COMMENT
HIGHsrc/NAudio.WinForms/Gui/Fader.Designer.cs3// This code was generated by a tool.COMMENT
HIGHsrc/NAudio.WinForms/Gui/WaveViewer.Designer.cs3// This code was generated by a tool.COMMENT
HIGHsrc/NAudio.WinForms/Gui/PanSlider.Designer.cs3// This code was generated by a tool.COMMENT
HIGHsrc/NAudio.Wasapi/WasapiRecorder.cs378 /// shared mode via AutoConvertPcm, so the configured buffer length is honoured as requested.COMMENT
Decorative Section Separators7 hits · 26 pts
SeverityFileLineSnippetContext
MEDIUM…io.Core.Tests/WaveStreams/BufferedWaveProviderTests.cs78 // ── Constructor defaults ──────────────────────────────────────────────COMMENT
MEDIUM…io.Core.Tests/WaveStreams/BufferedWaveProviderTests.cs103 // ── BufferLength property ─────────────────────────────────────────────COMMENT
MEDIUM…io.Core.Tests/WaveStreams/BufferedWaveProviderTests.cs113 // ── BufferDuration property ───────────────────────────────────────────COMMENT
MEDIUM…io.Core.Tests/WaveStreams/BufferedWaveProviderTests.cs123 // ── DiscardOnBufferOverflow ───────────────────────────────────────────COMMENT
MEDIUM…io.Core.Tests/WaveStreams/BufferedWaveProviderTests.cs143 // ── ClearBuffer ───────────────────────────────────────────────────────COMMENT
MEDIUM…io.Core.Tests/WaveStreams/BufferedWaveProviderTests.cs154 // ── Offset parameters ─────────────────────────────────────────────────COMMENT
MEDIUM…io.Core.Tests/WaveStreams/BufferedWaveProviderTests.cs179 // ── Miscellaneous ─────────────────────────────────────────────────────COMMENT
AI Slop Vocabulary2 hits · 6 pts
SeverityFileLineSnippetContext
MEDIUM…oConsoleTest/Wasapi/Tests/WasapiProcessLoopbackTest.cs62 // off the UI thread is the robust pattern.COMMENT
MEDIUM…Audio.Wasapi/MediaFoundation/MFByteStreamFromStream.cs17/// Newer implementation that does not utilize the IStream -> IMFByteStream shim. <br />COMMENT