Aliasing (Audio)
Audio Aliasing
Distortion occurring when audio frequencies above the Nyquist limit are sampled, producing false lower frequencies.
AudioAudio Codec
Software that encodes raw audio into a compressed format and decodes it back for playback (e.g. MP3, AAC, FLAC).
AudioAudio Fingerprint
Acoustic Fingerprinting
A compact digital summary of an audio signal used to identify songs or detect duplicate content.
AudioBit Depth (Audio)
Audio Bit Depth
The number of bits in each audio sample, determining the dynamic range and noise floor (e.g. 16-bit, 24-bit).
AudioBitrate
比特率（数据速率）
音频或视频流中每秒处理或传输的比特数，直接影响质量和文件大小。更高的比特率意味着更好的质量但更大的文件。
AudioChannel
声道（音频信号通路）
录音中的单独独立音频数据流。单声道音频有一个通道，立体声有两个（左和右），环绕声系统使用六个或更多通道进行空间音频定位。
AudioChorus Effect
Audio Chorus Effect
An effect that duplicates a signal with slight pitch and timing variations to simulate multiple voices or instruments.
AudioClipping
削波（音频失真）
当信号超过系统能处理的最大电平时产生的音频失真形式，将波形顶部和底部削平为方波，产生刺耳的声音效果。
AudioDe-esser
Audio De-esser
A specialized compressor targeting sibilant frequencies (4-10 kHz) to reduce harsh 's' and 'sh' sounds in vocals.
AudioDithering (Audio)
Audio Dithering
Adding low-level random noise when reducing bit depth to mask quantization distortion and preserve detail.
AudioDynamic Range
Audio Dynamic Range
The difference between the quietest and loudest parts of an audio signal, measured in decibels.
AudioFLAC
Free Lossless Audio Codec
An open-source audio codec that compresses audio without any loss in quality, reducing file sizes by 50-70%.
AudioLoudness War
The trend of increasing audio loudness in mastering at the expense of dynamic range, countered by LUFS standards.
AudioPitch
Audio Pitch
The perceived frequency of a sound, determining how high or low a tone sounds to the listener.
AudioSample Rate
采样率（采样频率）
将模拟音频信号转换为数字形式时每秒测量（采样）的次数。采样率决定了可记录的最高频率，直接影响音频保真度。
AudioCodec
编解码器（编码器-解码器）
压缩（编码）和解压缩（解码）音频、视频或图像数据以减小文件大小同时保持可接受质量的软件或硬件组件。
AudioWaveform
波形（音频可视化表示）
显示音频信号振幅随时间变化的可视图形，表现为水平时间轴上方和下方的波动线。波形显示提供音频内容的即时视觉概览。
AudioEqualization
均衡（频率平衡调整）
选择性地提升或衰减音频信号中特定频率范围以塑造音调平衡的过程。均衡器用于音乐制作、现场扩声和消费者音频设备中。
AudioNoise Reduction
降噪（音频清理）
从音频录音中去除或减少不需要的背景声音（嘶嘶声、嗡嗡声、环境噪声）以提高清晰度和听感质量的过程。
AudioFade
淡变（音频音量过渡）
音频音量在指定时间内逐渐增加（淡入）或减少（淡出）的效果，用于创建平滑的过渡、避免突然的开始/结束，以及在曲目之间进行混合。
AudioCompression (Audio)
Dynamic Range Compression
Reducing the volume difference between the loudest and quietest parts of an audio signal.
AudioPCM
Pulse-Code Modulation
The standard method of digitally representing analog audio signals by sampling amplitude at regular intervals.
AudioMono
Monaural Audio
Audio reproduced through a single channel, where all sound comes from one source.
AudioSpectrogram
Audio Spectrogram
A visual representation of audio frequencies over time, showing the spectrum of a signal.
AudioTempo
Audio Tempo
The speed or pace of an audio track, measured in beats per minute (BPM).
AudioReverb
Reverberation
The persistence of sound in a space after the original sound stops, simulated digitally for spatial effects.
AudioLimiter
Audio Limiter
A compressor with a very high ratio that prevents audio from exceeding a set maximum level.
AudioDelay
Audio Delay Effect
An effect that records and plays back audio after a set time interval, creating echo and rhythmic repetitions.
AudioNoise Gate
Audio Noise Gate
A processor that silences audio below a threshold level, eliminating background noise between sounds.
AudioSidechain
Sidechain Processing
Using one audio signal to control the processing of another, commonly used to duck music under voiceover.
AudioLUFS
Loudness Units Full Scale
A standardized loudness measurement reflecting perceived volume, used for broadcast and streaming normalization targets.
AudioRMS Level
Root Mean Square Level
An average audio level measurement that better represents perceived loudness than peak level readings.
AudioPeak Level
Audio Peak Level
The highest instantaneous amplitude in an audio signal, used to prevent clipping and set headroom.
AudioStereo Imaging
Techniques for widening, narrowing, or repositioning the perceived stereo field of an audio mix.
AudioFrequency Spectrum
Audio Frequency Spectrum
The range of frequencies present in an audio signal, typically from 20 Hz (bass) to 20 kHz (treble) for human hearing.
AudioHarmonic Distortion
Total Harmonic Distortion
The presence of frequencies that are integer multiples of the fundamental, sometimes added intentionally for warmth.
AudioNyquist Frequency
Half the sample rate, representing the highest frequency that can be accurately captured in digital audio.
AudioPsychoacoustics
The study of how humans perceive sound, informing audio compression, spatial audio, and loudness standards.
AudioCrossfade
Audio Crossfade
A smooth transition between two audio clips where one fades out while the other fades in simultaneously.
AudioAudio Watermark
Audio Watermarking
Embedding imperceptible identifying data into an audio signal for copyright tracking and content identification.
AudioSpatial Audio
3D sound technology that positions audio sources in virtual space around the listener using HRTF and head tracking.
AudioNormalization
归一化（音频电平调整）
调整音频录音整体音量的过程，使其最响部分达到标准目标水平，或使感知响度在不同曲目间保持一致。
AudioMid-Side Processing
Mid-Side Audio Processing
A technique separating stereo audio into center (mid) and sides signals for independent processing.
AudioStereo
Stereophonic Audio
Audio using two independent channels (left and right) to create a sense of spatial width.
Audio