23 Feb
2014
23 Feb
'14
7:09 p.m.
hi folks,
i have a yamaha wx5 (midi saxophone). i was thinking to use my midi2usb
cable to plug into raspberry pi which would use some fluidsynth soundfonts
to synthesize music realtime.
do you know about such project existing, or should i work on it from
beginning? (i.e. find some rt kernel, install sw, rearrange system for no
gui etc...)
do you think raspberry can handle it well?
thank you.
milan
24 Feb
24 Feb
12:03 a.m.
On 24/02/14 05:09, Milan Lazecky wrote:
hi folks,
i have a yamaha wx5 (midi saxophone). i was thinking to use my midi2usb
cable to plug into raspberry pi which would use some fluidsynth soundfonts
to synthesize music realtime.
do you know about such project existing, or should i work on it from
beginning? (i.e. find some rt kernel, install sw, rearrange system for no
gui etc...)
do you think raspberry can handle it well?
USB is probably your biggest issue here, provided the raspberry can handle the
synthesis you want to do, you can help by assigning only a minimum of memory to
the GPU. No need to do any other rearranging of the system, with raspbian it
starts out headless (with X installed if you want to launch it) and capable of
quite low latencies. It has a basic minimum of processes running and ready to
add what you want from the extensive repository with apt-get. The settings to
work headless are mostly the default. These are great advantages in terms of
time required to get it running.
USB implementation is poor and only some audio cards work, plus something else
on USB like a midi input or networking will make it trickier. In your case,
needing only stereo out, it is certainly easier.
Seriously consider an audio solution that can use HDMI audio out.
Simon
9:19 a.m.
Thank you Simon for positive reaction,
I start to look forward to prepare such synthesizer, will think about HDMI
audio, but at this moment I will be just happy with RPi stereo line-out.
Kind regards
Milan
2014-02-24 0:03 GMT+01:00 Simon Wise <simonzwise(a)gmail.com>om>:
On 24/02/14 05:09, Milan Lazecky wrote:
hi folks,
i have a yamaha wx5 (midi saxophone). i was thinking to use my midi2usb
cable to plug into raspberry pi which would use some fluidsynth soundfonts
to synthesize music realtime.
do you know about such project existing, or should i work on it from
beginning? (i.e. find some rt kernel, install sw, rearrange system for no
gui etc...)
do you think raspberry can handle it well?
USB is probably your biggest issue here, provided the raspberry can handle
the synthesis you want to do, you can help by assigning only a minimum of
memory to the GPU. No need to do any other rearranging of the system, with
raspbian it starts out headless (with X installed if you want to launch it)
and capable of quite low latencies. It has a basic minimum of processes
running and ready to add what you want from the extensive repository with
apt-get. The settings to work headless are mostly the default. These are
great advantages in terms of time required to get it running.
USB implementation is poor and only some audio cards work, plus something
else on USB like a midi input or networking will make it trickier. In your
case, needing only stereo out, it is certainly easier.
Seriously consider an audio solution that can use HDMI audio out.
Simon
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http://lists.linuxaudio.org/listinfo/linux-audio-user
12:06 p.m.
On 24/02/14 19:19, Milan Lazecky wrote:
Thank you Simon for positive reaction,
I start to look forward to prepare such synthesizer, will think about HDMI
audio, but at this moment I will be just happy with RPi stereo line-out.
Kind regards
You might not be so happy with the built in line out, it is a very basic output
with very low quality audio. The hardware design is quite heavily focussed on
playing media (preferably directly, on an otherwise headless system) through the
HDMI output, and I've found the supplied libraries and code for doing this quite
workable. The xbmc lot did a fair bit of work on this, and as a small device to
attach to a projector they are great.
I've also used some small usb audio cards with good results, but did not need
low latency or other usb stuff so I can't say how they'd go with your project.
Here is a link to one we used ...
http://www.ebay.co.uk/itm/UK-PCM2704-USB-to-S-PDIF-Sound-Card-DAC-3-5mm-ana…
but I think we got them a bit cheaper than that, and used a little amp about
that size also ... for a bunch of sound sources. There are lots of little cards
based on that chip, they probably all work well.
Simon
1:13 p.m.
Thank you all,
now I get enough information - I will order some simple usb soundcard/DAC
and will approach to tune up the system using LAU wiki, thanks for the
links and ideas!
Will inform about some progress once I will get the card etc.
Thank you!
Milan
2014-02-24 12:06 GMT+01:00 Simon Wise <simonzwise(a)gmail.com>om>:
On 24/02/14 19:19, Milan Lazecky wrote:
Thank you Simon for positive reaction,
I start to look forward to prepare such synthesizer, will think about HDMI
audio, but at this moment I will be just happy with RPi stereo line-out.
Kind regards
You might not be so happy with the built in line out, it is a very basic
output with very low quality audio. The hardware design is quite heavily
focussed on playing media (preferably directly, on an otherwise headless
system) through the HDMI output, and I've found the supplied libraries and
code for doing this quite workable. The xbmc lot did a fair bit of work on
this, and as a small device to attach to a projector they are great.
I've also used some small usb audio cards with good results, but did not
need low latency or other usb stuff so I can't say how they'd go with your
project.
Here is a link to one we used ...
http://www.ebay.co.uk/itm/UK-PCM2704-USB-to-S-PDIF-Sound-
Card-DAC-3-5mm-analog-digital-output-volume-funct-/120940457164
but I think we got them a bit cheaper than that, and used a little amp
about that size also ... for a bunch of sound sources. There are lots of
little cards based on that chip, they probably all work well.
Simon
12:01 p.m.
On Monday 24 February 2014, Simon Wise wrote:
On 24/02/14 05:09, Milan Lazecky wrote:
I have very good results on a Raspi with an USB Audio DAC from here:
http://hifimediy.com/index.php?route=product/product&product_id=83
Description from the site:
"HiFimeDIY Sabre USB DAC. Digital to Analog Converter 96khz/24bit (incl USB to
optical converter feature)"
Gerhard
i have a yamaha wx5 (midi saxophone). i was
thinking to use my midi2usb
cable to plug into raspberry pi which would use some fluidsynth soundfonts
to synthesize music realtime.
do you know about such project existing, or should i work on it from
beginning? (i.e. find some rt kernel, install sw, rearrange system for no
gui etc...)
do you think raspberry can handle it well?
USB implementation is poor and only some audio cards work, plus something else
on USB like a midi input or networking will make it trickier. In your case,
needing only stereo out, it is certainly easier.
9:53 a.m.
On 02/23/2014 07:09 PM, Milan Lazecky wrote:
hi folks,
i have a yamaha wx5 (midi saxophone). i was thinking to use my midi2usb
cable to plug into raspberry pi which would use some fluidsynth soundfonts
to synthesize music realtime.
do you know about such project existing, or should i work on it from
beginning? (i.e. find some rt kernel, install sw, rearrange system for no
gui etc...)
do you think raspberry can handle it well?
thank you.
milan
Hi Milan,
http://wiki.linuxaudio.org/wiki/raspberrypi
Also check my Youtube channel for some examples:
http://www.youtube.com/autostatic3000/raspberrypi
I've had a brief occasion where I could hook up an Akai EWI to my RPI,
it worked but I couldn't test it extensively.
Best,
Jeremy
9:52 p.m.
On Sun, Feb 23, 2014 at 07:09:06PM +0100, Milan Lazecky wrote:
i have a yamaha wx5 (midi saxophone). i was thinking
to use my midi2usb
cable to plug into raspberry pi which would use some fluidsynth soundfonts
to synthesize music realtime.
There are some examples of people trying to do this and I think the general
impression is that the latency is touch and go depending on what you're
playing. I have one here running fluidsynth, alsa midi using an Evolution
USB keyboard, and a set of mellotron soundfonts. It's OK for chords and
single note runs, but if I try anything rapid, it feels laggy. Of course,
compared with a real mellotron that's not so bad, but playing a WX5 may be
sore.
As others have pointed out the audio out isn't audiophile quality, but I'd
have thought if you were in a studio you'd use proper hardware and this
would be for live use? In which case, factory in an amp, an audience talking
and so on, and I don't think it's as big an issue as people make out.
27 Feb
27 Feb
6:41 p.m.
On 02/24/2014 08:44 PM, Ben Bell wrote:
As others have pointed out the audio out isn't audiophile quality, but I'd
have thought if you were in a studio you'd use proper hardware and this
would be for live use? In which case, factory in an amp, an audience talking
and so on, and I don't think it's as big an issue as people make out.
Has anybody here tried out this hardware?
http://www.element14.com/community/community/raspberry-pi/raspberry-pi-acce…
/ Hans
8:24 p.m.
On 02/27/2014 06:40 PM, Hans Wilmers wrote:
Has anybody here tried out this hardware?
http://www.element14.com/community/community/raspberry-pi/raspberry-pi-acce…
/ Hans
Is it finally available? The I'm going to order one right away!
Bye,
Jeremy
11:22 p.m.
On Thu, 27 Feb 2014, Hans Wilmers wrote:
Has anybody here tried out this hardware?
http://www.element14.com/community/community/raspberry-pi/raspberry-pi-acce…
Looks interesting. It does limit what other HW can be used with the board,
but I would guess almost anything does that. They also warn against using
a USB hub at the same time, but I guess a USB MIDI (with no USB mouse)
would be ok. It does not say what the latency is or can be set to. No
mention of jackd at all :) Their kernel has to be used right now, but the
driver bits are available if you wish to roll your own kernel.
--
Len Ovens
www.ovenwerks.net
3923
days inactive
3927
days old
linux-audio-user@lists.linuxaudio.org
10 comments
7 participants
participants (7)
-
Ben Bell -
Gerhard Zintel -
Hans Wilmers -
Jeremy Jongepier -
Len Ovens -
Milan Lazecky -
Simon Wise