Raspberry Pi Forums

vadim

I bet you will be disappointed by the latency you will get with USB and non-accelerated processing. Definitely not for live performance.

vadim

I'm not even talking about an official codec. PCM interface is not even defined in bcm2708 platform in the official Linux kernel. I've helped several users to get I2S working using an experimental kernel (just check who's been recently responding to questions and requests for help in that forum topi...

vadim

Yes, but is seems quite unknown that the revision 2 boards (A&B) have a new GPIO header P5 that contains an official sound interface, (I2S). I don't think it can be called official until it is supported by the official kernel. It is not. Furthermore, there is no device tree implementation so an...

vadim

I soldered an opamp-based preamp for an electret mic, an ADC chip and fit it all in RPi case.

Still, I suggest just plugging an old USB webcam and record voice straight away

vadim

yep, thanks. looks like you've got a good uplink at home.

vadim

The difference between 8MP and 41MP on the same physical size of sensor is 33MP of noise :lol: Many browsers now start to load much more rubish than they most probably will present on screen. Just to claim that they are the fastest browsers. Some might agree that is an optimisation of user experienc...

vadim

Ctrl+i -> Statistics (or something similar) during playback on the laptop.

vadim

Enjoy! You will get udp packets disappearing or delayed along the way from time to time. Thus the glitches. Actually I am still eager to know what is the ratio of dropped packets in this setup.

vadim

Just check the stream that comes from the provider before attempting any unaccelerated transcoding!

vadim

is it worse than on laptop? is Pi connected by cable or Wifi? what is the bitrate and what audio/video streams are transmitted? what is cpu load? how much memory is given to GPU? how large is buffer on vlc? how long is ping from one Pi to another?

vadim

I use these PNY cards on two RPi systems running Raspbian and ArchLinux. Only one problem was experienced when some network settings disappeared but I attribute that to power interruption. I don't overclock as that is the shortest path to class 10 SD card corruption

vadim

PiModules wrote:Hi,
Check the UPiS Basic or the UPiS Advanced from http://www.pimodules.com
You can buy it via distributors

Warmest Regards
PiMaster

Is it possible to modify the board so that it doesn't block the camera connector?

vadim

@vadim Thanks for your reply. I dont have enough knowledge to answer any of your questions. I dont even know where to set the size of the packages to start with. Nor how to use HW acceleration. In vlc on your laptop in Media Information / Statistics you can see how many frames/audio buffers were dr...

vadim

You really have to use HW acceleration.
Out of curiosity, how many packets get lost in transborder streaming and what size of packets is default in vlc?

vadim

The more the merrier. As we start to see more commercial standardised products then producers and users will (hopefully) invest more in development of (more or less) universal drivers that would be included in the standard RPi kernel. Without it we have problems I outlined in https://github.com/koal...

vadim

Yay! A sound card for RPi! I hope this will bring more momentum to I2S driver development

http://www.element14.com/community/comm ... wolfson_pi

vadim

Try to find and watch Terra Mater series Bionic Revolution for inspiration. They discussed several devices for blind people and even enabled a blind man to ride a bike in a wood.

vadim

This behaviour will be observed even without shorting if empty capacitors (or physical elements forming a large enough capacitor) are present without current limiting resistors.

vadim

My bad, shouldn't have mixed apples with raspberries :lol: Now Apple is used in arguments against what I say about RasPi and RasPi is used as argument against what I've never said about Apple... The future of RasPi and its strategy should be discussed in a separate thread and Apple, its products and...

vadim

should be. I requested that he put his name and email.

vadim

@bezel Contact Francesco, the author of the drivers you're using. There is no config switching in the drivers so the user is supposed to know how everything should be connected (and that is not documented either). He should be able to advise how to connect configuration pins and supply master clock ...

vadim

YAY!

vadim

What is it that you want to learn? PWM interface or ineffective way of producing noise?

vadim

There are many linux distros for just about any ARM based device Exactly. None of which works efficiently on at least two of popular ARM-based boards that offer development capabilities and desktop environment in one package. Tailoring GNU/Linux distributions to run efficiently on any board that co...

vadim

left justified mode doesn't change what i2s driver does, i told you so. it's still to be rewritten but so far there was not much demand for alternative formats. i wonder how you set integer variable to 32.5 :) change the code where it sets half frame from 20 to 32 because at that point driver thinks...

Search found 129 matches

Re: USB soundcards that work in PD?

Re: using an electret mic

Re: using an electret mic

Re: using an electret mic

Re: Stream IPTV from one RPi to another RPi

Re: Flash Drive as RAM

Re: Stream IPTV from one RPi to another RPi

Re: Stream IPTV from one RPi to another RPi

Re: Stream IPTV from one RPi to another RPi

Re: Stream IPTV from one RPi to another RPi

Re: halt renders PNY SD card non-bootable

Re: Cheap UPS?

Re: Stream IPTV from one RPi to another RPi

Re: Stream IPTV from one RPi to another RPi

Re: Wolfson Pi Audio Card

Wolfson Pi Audio Card

Re: Glasses for the blind

Re: Pi powers down when I complete a circuit

Re: apple cheats again!!!

Re: I2S: Anyone got it running? (answer is yes!)

Re: I2S: Anyone got it running? (answer is yes!)

Re: Next firmware tree is now 3.10

Re: Play PCM audio file using on board gpio PWM pin

Re: apple cheats again!!!

Re: I2S: Anyone got it running? (answer is yes!)