[Sursound] More Capsules - More Self-Noise Or Less?

Do Many Small Capsules Mean More Self-Noise Or Less? Less! As we've discussed before, the more capsules an array microphone has, the lower its self-noise. That's because as you double the number of capsules, the combined output voltage goes up 6 dB, but the self-noise only goes up 3 dB. The

Re: [Sursound] More Capsules - More Self-Noise Or Less?

But isn't that only true if all the capsules are picking up the full signal? In the case of an Ambisonic mike, where the directional capsules are pointed in various directions, you won't get the full advantage. Cordially, Rudy ChalupaPleiades Audio + Electronics On Wednesday, November 8, 202

Re: [Sursound] More Capsules - More Self-Noise Or Less?

Hi Len, As we’ve discussed before… This simply isn’t true. If you add two omnidirectional microphones together you get a 6dB increase in peak audio signal (voltage) but only a 3dB increase in noise because noise is an average power. P=I^2*R and V=IR. The square makes the difference. If you d

Re: [Sursound] More Capsules - More Self-Noise Or Less?

The other thing to add to this point is the 3dB (not 9dB) improvement in signal to noise ratio ONLY APPLIES TO THE W CHANNEL, which ignores the noise on the other eight channels of your B-Format. You get a 3dB increase of noise per order of ambisonics, which is why eight-capsule hybrid second

Re: [Sursound] More Capsules - More Self-Noise Or Less?

You'll have to argue with Prof. Angelo Farina. Frankly, between the two of you, I know whom to trust.   https://www.facebook.com/groups/Ambisonics.VR.360.Audio/?multi_permalinks=5265393360254911¬if_id=1666553911378133

Re: [Sursound] More Capsules - More Self-Noise Or Less?

You get a 3dB increase of noise per order of ambisonics, which is why eight-capsule hybrid second order microphones can actually sound noisier than first order microphones.   That's true only if you don't know how to properly design an HOA encoder.     Len Moskowitz (mosko...@core-sound.com)

Re: [Sursound] More Capsules - More Self-Noise Or Less?

The measurements will be the source of truth. J Sent from my iPhone > On 9 Nov 2023, at 12:56, lenmoskow...@optonline.net wrote: > >  >> You get a 3dB increase of noise per order of ambisonics, which is why >> eight-capsule hybrid second order microphones can actually sound noisier >> than

Re: [Sursound] More Capsules - More Self-Noise Or Less?

I could refer you back to Prof Angelo Farina’s input on the subject. He confirmed the 3dB increase in noise per order. Just out of interest - who designed your encoder? The increase in signal level was when you add two back to back cardioids was also confirmed by someone whose opinion I suspec