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Adding of equal strong coherent signals - Eberhard Sengpiel
http://www.sengpielaudio.com/calculator-coherentsources.htm
Decibels are logarithmic "units" that can not be added to other numbers linearly. If a source creates a level L 1 and a second source L 2 that is built from the first, (as two closely powered loudspeakers get the same signal), then this gives a sum of …
Questions: Loudspeaker Signals and Ear Signals - …
http://www.sengpielaudio.com/LoudspeakerAndEarSignalsEnglish.pdf
Questions: "Loudspeaker Signals and Ear Signals" - English. 1. A sound source is to find at point Q which sends his sound to the microphone system as AB time-of-arrival stereophony. a) Which time difference t do you find at the microphones? b) Which level difference L do you find at the microphones? c) What is the percentage of the phantom
Answers: Loudspeaker Signals and Ear Signals - English
http://www.sengpielaudio.com/LoudspeakerAndEarSignalsEnglishAnswers.pdf
pictures are moved in the direction of the loudspeakers. The sound picture is crowded in the speakers. This microphone spacing should be around . a = 1,00 to 1,20 m. c) An AB . room microphone system. should record also decorrelated low frequency room signals, which appear as room flanks. This microphone spacing should be around . a = 2 to 3 m. 2.
Total dB level adding of incoherent or noncoherent ...
http://www.sengpielaudio.com/calculator-leveladding.htm
In most cases we will add uncorrelated signals as noise or music. If a sound source creates a sound level (SPL) of L 1 = 60 dB and another source with L 2 = 60 dB is added, then it is not the level of 120 dB, but gives an incoherent (noncoherent) summing of the signal level of 63 dB. If both values are equal, it is easy.
How do Sound Pressure Levels add when listening?
http://www.sengpielaudio.com/HowSoundLevelsAdd.pdf
coherent and incoherent electrical source signals, as well as the addition of coherent and incoherent (non-coherent) acoustic reproduced signals. L . UdK Berlin . Sengpiel . 03.2000 . F + A . Two loudspeakers are . placed tightly together. R . First case: From one speaker comes the sound of a violin, from the other speaker the sound of a trumpet.
Decibels to Voltage Gain and Loss convert calculation ...
http://www.sengpielaudio.com/calculator-gainloss.htm
Gain means signal strength or amplification. In audio we use only voltage amplification. Forget the power. The amplification factor, also called gain, is the extent to which an active device boosts the strength of a signal. The damping factor, also called loss, is the extent to which a passive device reduces the strength of a signal.
dB calculate - Audio Tontechnik Eberhard Sengpiel ...
http://www.sengpielaudio.com/calculator-db.htm
dB calculate dB calculator decibel calculator voltage power ratio reference voltage power level matching dBA dB SPL sound pressure intensity ratios converter thd percent % audio engineering impedance matching bridging - Eberhard Sengpiel sengpielaudio.com
Loudness level gain volume perception dB factor volume ...
http://www.sengpielaudio.com/calculator-loudness.htm
Perceived loudness is a psycho-acoustic quantity that depends on sound pressure level, the frequency spectrum, and the time behavior of the sound in question. Level, Volume, and Loudness: The sone is a unit of perceived loudness proposed by Stanley Smith Stevens in 1936. That is: 40 phon or 40 dB at 1 kHz; see: Sone and phon. Perceived volume or loudness of …
R 128 s1 - EBU
https://tech.ebu.ch/docs/r/r128s1.pdf
audio signal and so avoid overly dynamic short-form programmes, which would lead to audience complaints. The ‘Maximum True Peak Level’ of an audio signal should be used to check compliance with the upper technical limit of the signal chain. The measure ‘Loudness Range’ is not useful for Short-form Content. It is based on a statistical
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