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What are some reliable software options to convert audio files to different formats without losing quality?
**Psychoacoustic models** are used in audio compression algorithms to remove imperceptible sounds, reducing file size without affecting quality.
**Sampling rates** in digital audio conversion can range from 44.1 kHz (CD quality) to 192 kHz (professional mastering), affecting fidelity and file size.
**Bit depth**, measured in bits per sample, affects dynamic range and noise floor in digital audio, with 16-bit being standard for CDs.
**Lossless compression**, like FLAC or ALAC, preserves original audio data, while **lossy compression**, like MP3 or AAC, discards some data for smaller file sizes.
The **Nyquist-Shannon theorem** states that a sampling rate must be at least twice the highest frequency of the signal to accurately capture the audio data.
**CD quality** audio, 44.1 kHz and 16-bit, is considered the minimum standard for acceptable audio quality, but higher specs are often used.
**Quantization**, the process of assigning discrete values to continuous signals, affects the accuracy of digital audio representation.
**Dither**, a intentional noise added to digital audio, can improve the signal-to-noise ratio and reduce distortion.
**Noise shaping**, a technique used in audio compression, redistributes quantization noise to less audible frequencies.
**Windowing functions**, used in audio analysis, help reduce spectral leakage and improve frequency resolution.
**Convolution**, a mathematical operation, is used in digital signal processing to simulate audio effects, such as reverb or echo.
**Fourier analysis**, a mathematical tool, is used to decompose audio signals into their frequency components.
** psychoacoustic masking**, a phenomenon where softer sounds are masked by louder ones, is exploited in audio compression algorithms.
**Format compatibility**, when converting audio files, is crucial to ensure playback on different devices and platforms.
**Metadata**, tags added to audio files, contain information like artist, title, and album art, and can be preserved during conversion.
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