TP Sounds - Distortion - Skips
roognation
Posts: 138
Most of the time, when am using the default "boop" sound for button hits I am hearing a slight distortion. The distortion sounds like a skip or something, and I am guessing this is tied to the architecture of the Modero line sound processor. Hitting the same button, I can hear the distortion happen in different parts of the playback, so I am sure the recording is fine... Also, the G3 panels do not have this problem (still love the immediate sound and instant feedback and touch sensitivity of the old CV6 panels) , and I have not tried to do any critical listening to the 5200i (anyone?).
I have heard this mostly on MVP-8400s. I have not had time to gripe about this until now, and figured I would ask "the collective" before really crying foul.
I know I should try to record it and put a sample on here...maybe I will update this post later with one.
Anyone else having "boop" sound issues? Did I miss another post regarding this issue?
Thanks for your eyeball time.
I have heard this mostly on MVP-8400s. I have not had time to gripe about this until now, and figured I would ask "the collective" before really crying foul.
I know I should try to record it and put a sample on here...maybe I will update this post later with one.
Anyone else having "boop" sound issues? Did I miss another post regarding this issue?
Thanks for your eyeball time.
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Comments
Oh yeah, same problem on all recent touchpanels that I have used. My guess is that the sound got corrupted somewhere in manufacturing and was propogated through all the touch panels.
I most often use a different sound for button pushes and am not hearing the same effect so I would guess the distortion is a result of a corrupted file that keeps getting installed on these panels. If you hear the distortion at different parts of the playback, I don't believe that necessarily means that the problem is somewhere else. A corrupted sound file can distort slightly differently every time the playback occurs due to nonlinearities of how a corrupt file gets processed if I am not mistaken. Time to make a request to be able to change the default sound the panels use.
Paul
Take a look: C:\Program Files\Common Files\AMXShare\G4SupportFiles\__system\graphics\sounds
You'll find the default sounds there.
Wouldn't you hear it on every sound then? The only time I hear it is on the default sound.
Paul
Yes. My experience has been that after a few faulty sound playbacks, whatever is dogging the panel lets go and the playback is fine. It may also be that the default sound has a very quick attack and the hang occurs in the very begining of the playback. If other sounds start off more quietly, the hang may go unnoticed.
Hate to rain on the parade, but the sounds are still distorted, even with my current MVP-8400i that arrived from AMX a few days ago (firmware 2.84.18). I plowed through all the setup pages (device number, master IP, wireless, etc) and the default button hit sound was distorted in random places (all over) and in random ways (about 4 different anomolies that I could discern).
I have emailed service on a few occasions, but this is festering.
AMX: is this a firmware issue or a hardware/design issue?
AMX: should we ever expect to hear sound effects from the touchpanels without cracking or ticking?
I'll update here if I get any further information.
On a side note, my MVP-5200i does not seem to have this problem.
AMX is mum on this one. I only ever got a tech support person to partially confirm the existence of the problem once.
It's been several firmwares since this started happening. Leads me to beleive that it is not an easy fix for them.
.....continue speculating
I gave up on using sounds on the TP's because
of their dependable unreliability.
I had the issue of loading in small MP3's or WAV's
and the panel would sometimes only play half
of the audio clip or not play it at all.
I wasnt even driving this from code, I had the sound
playing as part of the button definition.
I guess I decided that the audio quality was not the
reason I was using the touch panel, it was just a
nice little add (when it worked).
If I really need to play sounds, I use a box that plays sounds off of a flash card and connect it into the audio switcher. The has been done for doorbell sounds, fire alerts, burglary alerts, and it could even be used to announce events (such as "Dinner is served!"), but nobody has requested this yet
As for the button hit sounds, it seems that when the panel first wakes up, it does not play the first button hit sound and often times the second button hit is chopped up or only the last half plays.
Jeff
My experience as well.
I would agree with Dave re the buffering. Perhaps the code that fills the buffer with the .wav file could be optimised further, or even use the good old double-buffering approach that Apple have been using for 15+ years. (Fill one buffer while playing from the other. Swap pointers to each buffer when the end of the buffer is reached.) Presumably Apple have separate interrupt routines servicing the read & write.
Paul
The problem I am speaking of was a VERY real firmware problem a few years ago. It has since been fixed, but the memory will continue to haunt me
Jeff
Is it all sounds or just the default sound?
Paul
Jeff