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What makes an amplifier have a lower noise floor? | diyAudio
https://www.diyaudio.com/community/threads/what-makes-an-amplifier-have-a-lower-noise-floor.104274/#:~:text=To%20establish%20your%20noise%20floor%2C%20you%20must%20first,condition%20IS%20the%20effective%20noise%20of%20the%20amplifer.
Noise in Audio Amplifiers
https://www.sound-au.com/noise.htm
For each digital bit, the relative noise floor is lowered by 6dB. A 1 bit system is of little use, and it is necessary to go to a minimum of 8 bits before even ordinary speech is intelligible - not acceptable, but intelligible. This gives a noise floor of 48dB - about what you would expect from the modern telephone system.
What makes an amplifier have a lower noise floor? | diyAudio
https://www.diyaudio.com/community/threads/what-makes-an-amplifier-have-a-lower-noise-floor.104274/
However, it is possible that your noise floor is NOT determined by your power amplifier at all in practice. This is because the PREAMP is usually the primary noise source for your system. This is because the self noise of the VOLUME CONTROL is amplifed by the line stage of the preamp and this is usually the primary noise contributor.
What is Noisefloor? — Audioengine
https://audioengineusa.com/explore/what-is-a-noisefloor/
It the base level of inherent noise present in any given environment at any given point. When we talk about what is noisefloor as it pertains to electronics, and more specifically speakers, we are referring to the amount of noise emitted from our speakers when they are turned on, but no audio is being played.
What is Noise Floor » Electronics Notes
https://www.electronics-notes.com/articles/radio/radio-receiver-sensitivity/what-is-noise-floor.php
The use of a low noise amplifier at the front end of the receiver will ensure that its performance will be maximised. Whether for use at microwaves or lower frequencies, this RF amplifier is the chief element in determining the performance of the whole receiver. The next most important element is the first mixer. Radio receiver noise floor. While noise can emanate from many …
"Amplifier Noise Floor" and hum acceptable?
https://forum.audiogon.com/discussions/amplifier-noise-floor-and-hum-acceptable
This discussion. Message User. 1,019 posts. 03-04-2021 1:08pm. Edit. Delete. It is 2021, any audible amplifier noise floor and hum is unacceptable to me! I put my ear on the twitter and hear no audible noise or hum. Your Parasound amp has a ground loop problem IMO.
Noise floor | Audio Science Review (ASR) Forum
https://www.audiosciencereview.com/forum/index.php?threads/noise-floor.14618/
E.g. if an amp exhibits 100 dB SNR at 100 W then the noise floor is 100 dB below 100 W or 10 nW (100 / 10^ (100/10) ). Convert to voltage depending upon the load impedance, e.g. for 8 ohms P = V^2/8 so V = sqrt (8*P) = 2.8e-4 Vrms = 283 uVrms. Check my math in case a typo snuck in but that should give you the idea.
Digital Audio and Amplifier Noise Floor Comparison - Is ...
https://audiophilestyle.com/forums/topic/56628-digital-audio-and-amplifier-noise-floor-comparison-is-16bit441khz-all-we-need/
If -96dB were 20% above the noise floor of most equipment, then most equipment would have a noise floor of -115 to -120dB (the former being 96 x 1.2 and the latter being 96 divided by 0.8). Based on measurements of a lot of equipment at sites like audioscience review, very few DACs and virtually no amplifiers are capable of -115dB and pretty much none are …
Understanding Op Amp Noise in Audio Circuits
https://www.ti.com/lit/pdf/sboa345
noise of an audio circuit can come from multiple sources, some intrinsic and some extrinsic. The three largest contributors to intrinsic noise in an amplifier circuit are the thermal noise, voltage noise, and current noise. In this article, we will demonstrate the importance of calculating total noise before selecting an
Chapter 10 - Op Amp Noise Theory and Applications
https://intranet.ee.ic.ac.uk/t.clarke/ee2lab/handouts/A/noise-3.pdf
Op Amp Noise Theory and Applications 10-3 10.2.2 Noise Floor When all input sources are turned off and the output is properly terminated, there is a level of noise called the noise floor that determines the smallest signal for which the circuit is useful. The objective for the designer is to place the signals that the circuit processes
0 floor noise amp? | DiyMobileAudio.com Car Stereo Forum
https://www.diymobileaudio.com/threads/0-floor-noise-amp.427564/
Amplifiers have a lot of filtering to remove noise on the input. If there is noise in the input signal, they can amplify it. If your amplifier is noisy, as you stated, then your signal chain is noisy. If you want a "quiet" amp, you are asking for an amp with more advanced filtering.
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