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2. Presence (sound recording) - Wikipedia

   en.wikipedia.org/wiki/Presence_(sound_recording)

   In filmmaking and television production, presence, also known as room tone, or simply room sound, is the "silence" recorded at a location or space when no dialogue is spoken. [1] Presence is similar to ambience , but is distinguished by a lack of explicit background noise .

3. Krisp - Wikipedia

   en.wikipedia.org/wiki/Krisp

   Krisp's main product is a software application that can remove background noises and voices from audio in real-time. The software uses machine learning algorithms to analyze the audio signal and separate the speech from background noise, allowing the speech to be output in clear, noise-free audio. This technology has a wide range of ...

4. Audio forensics - Wikipedia

   en.wikipedia.org/wiki/Audio_forensics

   Audio enhancement is a forensic process that aims at improving the audio file intelligibility by removing and cleaning unwanted noise from an otherwise unintelligible recording. [ 2 ] The forensic scientists try to remove these noises without affecting the original information present in the audio file.

5. Voice activity detection - Wikipedia

   en.wikipedia.org/wiki/Voice_activity_detection

   It uses inverse filtering trained on non-speech segments to filter out background noise, so that it can then more reliably use a simple power-threshold to decide if a voice is present. [ 5 ] The G.729 standard calculates the following features for its VAD: line spectral frequencies , full-band energy, low-band energy (<1 kHz), and zero-crossing ...

6. Electronic voice phenomenon - Wikipedia

   en.wikipedia.org/wiki/Electronic_voice_phenomenon

   Capture errors are anomalies created by the method used to capture audio signals, such as noise generated through the over-amplification of a signal at the point of recording. [ 39 ] [ 55 ] Artifacts created during attempts to boost the clarity of an existing recording might explain some EVP.

7. Comparison of analog and digital recording - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_analog_and...

   For electronic audio signals, sources of noise include mechanical, electrical and thermal noise in the recording and playback cycle. The amount of noise that a piece of audio equipment adds to the original signal can be quantified. Mathematically, this can be expressed by means of the signal-to-noise ratio (SNR or S/N ratio). Sometimes the ...

8. Dolby noise-reduction system - Wikipedia

   en.wikipedia.org/wiki/Dolby_noise-reduction_system

   A Dolby noise-reduction system, or Dolby NR, is one of a series of noise reduction systems developed by Dolby Laboratories for use in analog audio tape recording. [1] The first was Dolby A, a professional broadband noise reduction system for recording studios that was first demonstrated in 1965, but the best-known is Dolby B (introduced in 1968), a sliding band system for the consumer market ...

9. Sound recording and reproduction - Wikipedia

   en.wikipedia.org/wiki/Sound_recording_and...

   Sound recording and reproduction is the electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recording technology are analog recording and digital recording .