Raspberry Pi Forums

pholy

I don't recall which RPi I am using with my V1 Voice Kit, however, with the latest software the microphone level is very low, although my audio output was fine. There have been a couple of solutions involving installing Pulse Audio, which I think are mentioned in earlier posts. Although if you can't...

pholy

Workaround: I posted a workaround to this problem in a replay to the issue 356: https://github.com/google/aiyprojects-r ... issues/356

It's a bit involved, and it does seem to work.

pholy

Using the 2018-04-13 img file, I had the problem with the record level being too low. I applied the solution described in issue #313 as above. After installing a bunch of pulseaudio files, I was able to set the record level to a useful level. See my comment in issue #356 https://github.com/google/ai...

pholy

A late reply, for anybody searching for the qt5 serialport:

The serialport module has its own package:

apt-get install libqt5serialport5

pholy

And the board looks so much nicer without that bright yellow distraction.

pholy

I'm going to old off until I can get one ready-made. Is that going to be an option in the future? I'm useless with a soldering iron! I doubt it. :( Shame. Oh well. I'll continue hacking about with the TI-Launchpad. Maybe I'll get so fed up with banging my head against a set of registers there that ...

pholy

I think the problem is caused because the rpi-update script doesn't include a sync command at its end. rpi-update does a lot of writing to the flash card, and it uses standard linux file i/o. This means the writes are buffered and finished whenever the kernel gets around to it, or when a sync comman...

pholy

Quote: I found a power supply for a old game. Which I was thinking of using, but was not comfortable with. Which was wise... Aside from the voltage and current specification, the accuracy of the voltage regulation is a concern, as is the ripple voltage (an AC voltage riding on the DC from the supply...

pholy

Given that somebody went to the trouble of creating a Next Gen of lpr, you might google lprng as well. From the Synaptic description: The LPRng software is an enhanced, extended, and portable version of the Berkeley LPR software (the standards UNIX printer spooler) You can use this for local and rem...

pholy

There have been reports that low sampling rate files have problems with playback. I believe Dom is aware of these problems and working on a fix (or fixes). You might try installing sox and converting a file up to 48000 - although re-recording is obviously best, this would test the theory. I wish we ...

pholy

Are you using an lxterm within X? (I have a similar problem when I use aplay within an lxterm, but not when I exit X and try aplay at the console. I'm pretty sure this is a bug.) What do you get when you do 'ls -l /lib/modules/3.1.9+/kernel/sound' and 'ls -l /lib/modules/3.1.9+/kernel/sound/core' ? ...

pholy

A quick update - The official RPF raspbian distribution does not contain the alsa fix. I then added a new line to the file /etc/apt/sources.list.d/raspi.list 'deb http://archive.raspberrypi.org/debian wheezy untested' which is the existing line with 'main' changed to 'untested'. This will pull in a ...

pholy

I think you need to use 'startx' and then it will do the 'mate-session' after creating the x-display. - That's if the installation did all the set up properly. I'm not entirely sure because I used the pisces-mate download, which was complete - but a little out of date by now. Your English is fine; I...

pholy

The missing 1.5 seconds of sound was fixed in a kernel update, I believe. If you are still with one of the Raspbian hosted downloads, use rpi-update to get new kernel and modules and video core firmware. I think this is fixed in the 'official' RPF Raspian distribution, but I should double check.

pholy

To find out if a device is USB 1.1 or 2.0 you can (with the device plugged in) enter 'lsusb' and then find the device in the list and note the vendor and product id - EX: Bus 001 Device 004: ID 046d:c018 Logitech, Inc. Optical Wheel Mouse Then enter 'sudo lsusb -v -d 046d:c018' and look for the line...

pholy

This probably needs some checking: See http://packages.qa.debian.org/libu/libusb-1.0.html which suggests that libusb-1.0 has just been dropped. The libusb-1.0 source package was dropped because it no longer had any binaries built from it. Looking further it seems that the source package name change...

pholy

I googled "fceu linux sound" and found many problems and some possible solutions. From a Spanish debian forum I found "install oss-alsa and oss-compat and then modprobe snd_pcm_oss " If that isn't self-explanitory, just ask. It also relies on having oss compatibility compiled into your kernel, which...

pholy

Please add Libusb 1.0.9 http://sourceforge.net/projects/libusb/files/libusb-1.0/libusb-1.0.9/libusb-1.0.9.tar.bz2 I see old legacy libusb 0.1.x This probably needs some checking: See http://packages.qa.debian.org/libu/libusb-1.0.html which suggests that libusb-1.0 has just been dropped. It appears ...

pholy

On my desktop I get a ton of messages even with the sound working: [email protected]:~$ grandfatherclock.py ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknow...

pholy

I still don't get any sound out of aplay < /dev/random though...

That's because aplay wants a .wav file with proper headers, not just random garbage...

pholy

"sudo code?" whats that?

"pseudo code" pronounced 'sue dough' -- almost like 'Sue do' this (or that)
as in imitation or almost like code - text that presents an idea but would never compile..

Gotta love those homophones!

pholy

I believe the problem is caused by the initial volume value set by snd_bcm2835_new_pcm(...) in bcm2835-pcm.c (at the end). The value is 100, out of a range from -10320 to 400. That's about 97%, so it's no wonder it's loud. A value of -5000 would be safer, but maybe too soft for people to notice. I'l...

pholy

Your biggest problem is that the Pi doesn't have enough power to drive speakers through the 3.5mm jack. You will need an amplifier for each channel to drive speakers. I think you can remove the 3.5mm jack if you are skillful with a solder sucker, but I would try to find a little right angle plug ins...

pholy

I'm not familiar with FCEU, so let's step back a bit. Have you got sound from 'hello_audio.bin x' where x is either 0 or 1? This is the first basic test. You can find instructions for building it in the wiki, I think. Then, have you got the alsa sound driver installed? If you have the line 'snd_bcm2...

pholy

I noticed that hosts includes this line: 127.0.1.1 raspberrypi Shouldn't that be the default loopback address, 127.0.0.1? Yep. I wonder how that slipped in. From Wikipedia: # This is an example of the hosts file 127.0.0.1 localhost loopback ::1 localhost I'll fix mine after the news at 11:00 ...

Search found 46 matches

Re: Voice V1 is supported with Raspberry pi 3B+?

Re: New AIY drastically reduces recording volume [evidence]

Re: Microphone stopped working after update

Re: Getting Qt5 with Serialport on Raspberry Pi 2

Re: Removal of composite video out

Re: Gertboard shipping date.

Re: Bricked my RPi running rpi-update

Re: 5V @ 10 AMPS

Re: USB to printer without cups

Re: Record USB audio input

Re: No soundcard

Re: No sound from on-board card

Re: Raspbian + Mate

Re: No sound from on-board card

Re: Raspberry Pi is missing keyboard events

Re: Packages from debian you want to see in raspbian reposit

Re: FCEU and no sound?

Re: Packages from debian you want to see in raspbian reposit

Re: Can't start PortAudio

Re: Sound problems with new image

Re: Driving a RGB LED (PWM and 555 IC's)

Re: SEVERE bug in sound driver

Re: audio speaker inside the plastic case

Re: FCEU and no sound?

Re: default HOSTS file entry for raspberrypi