Yeah we are lacking the beamforming libs that can seem to run with a reasonable amount of load so with omnidirectional especially with music you get a lot of bleed in. I can get arecord working, can you help me? USB Camera-B4.09.24.1 at b-1.3, hiĭiscard all samples (playback) or generate zero samples (capture)Īrecord: device_list:272: no soundcards found… SUBSYSTEM!=“sound”, GOTO=“my_usb_audio_end”ĪTTRS=“VOICE”Ġ : bcm2835_headphonbcm2835 Headphones - bcm2835 Headphonesġ : USB-Audio - USB Camera-B4.09.24.1 I have added to /etc/modprobe.d/nf your info (the file was empty before), I have created a cat /etc/udev/rules.d/les with this info: I have not managed to ps3 eye getting work. We still need a method to pick the best mic instance whilst running 2x KWS but it can rival near 3 figure technology for a couple of quid. I think 2x in either a 180 or 135 degree position on a stereo usb sound card such as a £7 The Boya is a clumsy lump but the circular nature of electrets makes then quite easy to mount and 2x, 3x in maybe 180, 135 & 90 still accept signals from all sides but is attenuated if not approximately face on. If you are a maker or a builder it would be so good to see a unidirectional designed puck case as there is a big step up to the next best thing of hitech DSP microphones.Ī unidirectional microphone is a basic beamformer, they have decades of use via musicians for a reason and they are also real cheap.īoya is only decent one I can find with a no solder route but if you are tinkering and building I do suggest you try a cardioid type mic as much of what you capture with omnidirectional you do not want anyway. I rant about the Boya purely because its sensitive enough without soldering you can plug direct into a soundcard. You can pick up 9.7mm unidirectional electrets for about £0.20 each not as good as the Boya and for voice capture it has some simple advantages over a omnidirectional. The Boya seems to work well and all it is, is a 14mm high quality directional electret in a very well made metal case but just a very good one for price. I am sort of rattling on here as you mentioned ‘octaprints’ and it would be so good if someone with 3d printing skills might have a look what might be the best budget option by far. The Boya is a unidirectional mic which just means it has a cardioid pattern which helps give a small amount of echo & noise suppression which when close up it does help much with AEC. I find its rare that placement is in a centre of a room as often from walls to tables they are usually in position where much of the 360 of omnidirectional is not used. Lols the Boya is actually good but I was stressing get audio in/out on the same device as AEC/barge-in can be pretty important later on. I found those and a blind recommendation but does actually seem to be speaker/mic in one tidy puck. PS I will post again if you want the basic low down on audio engineering for arrays. Not sure the module for the ps3-eye presume its snd-usb-audio but cat /proc/asound/modules when plugged in and again when ps3-eye unplugged will tell you that one on the host. Options snd slots=snd-usb-audio,snd-bcm2835 Sudo nano /etc/modprobe.d/nf on the host options snd_usb_audio index=0 I tend to be a bit OCD so I do this just to get a better soundcard order. If you are using docker then remember to connect to the container. It should still work though and should list but now that RaspiOS defaults to pulseaudio depending on if you use the desktop or lite version and if you arecord or pyaudio it may or not work. Its just one of those PC myths that because its an array its any good, it was really good but that was the Sony software that was in the PS3 not the mic. Its debatable if the sum of the channels is an increase over the sum of the SNR which will happen and also side on it forms a high pass filter. That still doesn’t explain why its not recognised as the drivers are not great but they do work even though they are a reverse engineer hack that have had the same niggles for over a decade. Its sort of pointless as the beamforming algs to make it work where in the PS3 eye.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |