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Support and General Use => Audio Playback, Database and Playlists => Topic started by: 1bads87buick on September 03, 2006, 08:45:43 AM

Title: Screeching Whitenoise
Post by: 1bads87buick on September 03, 2006, 08:45:43 AM
I have a 30g video Ipod. While listening to music, it will play fine, then at any given time it makes this screeching :o whitenoise. I restart the song and it works again. It happens more frequently, when I am playing a song and advancing to another. Any ideas. Thanks
Title: Re: Screeching Whitenoise
Post by: Llorean on September 03, 2006, 12:23:22 PM
What build are you running?

What format is your music in?

Does it ever happen in the middle of a song without you pressing anything?
Title: Re: Screeching Whitenoise
Post by: 1bads87buick on September 03, 2006, 08:42:49 PM
I had downloaded the latest build for the ipod video last week. I am using Mp3 format for the whole library. It does this quite often, at least every 5 or 6 songs, sometimes sooner sometimes later. This is without me touching anything. I even have it set to icatcher, no peak meters. It is a horrible noise, sounds like, static then a little pause, then static again. It does this in a loop like fashion.
Title: Re: Screeching Whitenoise
Post by: Llorean on September 03, 2006, 11:35:32 PM
So, could you confirm that it's definitely still happening with the newest official build, since it seems to occur fairly often?

Also, does it happen in the same place on the same songs, or randomly?

What bitrate are your MP3s? What did you use to encode them?
Title: Re: Screeching Whitenoise
Post by: lalittle on September 04, 2006, 01:57:57 AM
Several others have been reporting this issue recently in the "Senab's build" thread in the "Unsupported builds" forum.  You might want to check the last few pages of that thread, and re-direct the people there to this thread.  Note that many of the other posts referred to this as a "static" issue, so you might need to search for this word.  I personally find "white noise" to be a better description of this issue.

Larry
Title: Re: Screeching Whitenoise
Post by: 1bads87buick on September 04, 2006, 07:45:22 AM
This is definitely happening with the latest build. It will do this at any time any song. I tested it a few times and it seems to do it randomly. My bit rate for all songs are 192kbps, encoded with, Itunes v6.0.4.2.
Title: Re: Screeching Whitenoise
Post by: ryran on September 04, 2006, 03:23:44 PM
Sounds exactly like what's been happening to me ever since I started using rockbox--one difference though: it only happens to me about once every other week (and I listen on average 8 hours a day). It can be quite painful if I'm listening to headphones kinda loud.... I never bothered to file a bug report 'cause I figured.. well.... I just figured it was known and would be fixed.

- my collection is all lame-encoded mp3. (I have a few oggs but don't know if it's ever happened on them.)
- I've never used a PURE standard cvs build on my ipod, so... (the first build I ever loaded was something that included the 64mb patch for 60gig videos) ....
- it appears to be completely random. I've had it happen in the first two seconds of a song right after turning on my ipod.. or after 6 hours of playing non-stop.
- I don't know that it keeps looping. .... from my experience it's a SUDDEN screeech and then maybe a quick pause and then more staticyscreechiness.... at that point I always unplug the headphones or stop it though, so... yeah.
Title: Re: Screeching Whitenoise
Post by: 1bads87buick on September 04, 2006, 05:01:25 PM
I deleted the build then re-installed it. So far so good, hopefully it was just a glitch. I'll keep everyone up to date. Thanks
                                                        Frank
Title: Re: Screeching Whitenoise
Post by: ryran on September 06, 2006, 11:13:47 AM
I can confirm that mine actually does loop just like badbuick. and it gets much more evil/static-y after the first couple seconds. hmmmmmmmm. yummy.
Title: Re: Screeching Whitenoise
Post by: Llorean on September 06, 2006, 02:24:08 PM
ryran: On a CVS build?

If all of you could post the date of your CVS build that is having this problem (or better yet the date of the first CVS build that had this problem for you) and your iPod model so we can see if it's all 5Gs or if it's other iPods, that would help a lot.
Title: Re: Screeching Whitenoise
Post by: accel on September 06, 2006, 10:07:51 PM
this has also happened to me on a few builds, i believe they were all patched builds
Title: Re: Screeching Whitenoise
Post by: Michael7 on September 25, 2006, 03:46:29 AM
This whitenoise hasnt happened to me in a while, about 3 months. It was in a few builds before any custom builds were made and has been in one or two of Senabs builds. It only happened when I was trying to change a song, screeching at the start of the chosen song. I only had mp3s then (160 kbps and above). As far as I can remember I had to reboot to get rid of it.

Thought I'd better add my settings

Crossfade (mix), track skip only
Replaygain (album gain)
No shuffle
No repeat

(I'm using Jonbuild without any problems at present)
Title: Re: Screeching Whitenoise
Post by: Jon_ on September 25, 2006, 10:00:05 PM
I have the exact same problem when using the daily build. When it would crossfade with another song it would sometimes fail on the crossfade and the noise just radomly starts. It happens between some songs when i click play and pause too quickly and flip too many tracks at once when a current song is playing.

Take Care,
Jon
Title: Re: Screeching Whitenoise
Post by: dunno on September 26, 2006, 01:17:28 AM
I downloaded the lastest Bleeding edge 25 -09 @19:53, and I have had this screeching white noise on two different songs during playback. the playback bar, elapsed time and time remaining then also exhibit strange behaviour, i.e. full playback bar, negative time on the time remaining, although the song isn't near the end. The noise lasts for a second or two then playback stops there's no sound for a few seconds then it starts to playback the same track from the begining and it plays that song back normally.

I didn't try it with default settings. I have reverted to a daily from the 22nd, with my settings, see what happens.

LAME @ aps
No Crossfade.
ReplayGain on.
EQ on.

Title: Re: Screeching Whitenoise
Post by: ryran on September 26, 2006, 05:59:21 AM
Hmmm. Sounds like we've got a couple different issues going on here. As far as the one _I_ experience, I think Jon hit it on the head--I use crossfade 24/7. And Llorean: I never answered you because NO I haven't ever used a CVS build (I've always at least included the 64mb patch for ipod), and I planned to test it and get back to you, but... that's obviously not happened. ;) Annnnnnnnnyway.
Title: Re: Screeching Whitenoise
Post by: Jon_ on September 30, 2006, 12:29:40 PM
A quick way to get out of the sceeching noise with out rebooting your rockbox is to skip forth quickly about 3 - 5 tracks let the song start to play then skip back to the track you were previously playing.

Take Care,
Jon
Title: Re: Screeching Whitenoise
Post by: ryran on September 30, 2006, 07:31:28 PM
Or just press stop and then play. Won't lose your place then.
Title: Re: Screeching Whitenoise
Post by: pondlife on October 02, 2006, 02:29:42 AM
Assuming this is happening on a current CVS build (unpatched), would somebody who's seeing it add a bug report to Flyspray?  Link: http://www.rockbox.org/tracker/index.php?type=2

It would be useful if the reporter(s) could also write their config settings to a .CFG file and attach that to the report.  Also make a note of your device, the file format(s) you're using and a "recipe" that will allow others to reproduce the problem.

I can't repro by either method mentioned above (on an H340, nor the sim) :(
Title: Re: Screeching Whitenoise
Post by: pondlife on October 04, 2006, 12:14:21 PM
Request for information! Anyone who can reproduce any of this rebuffering weirdness with a plain CVS build, please add your recipes to http://www.rockbox.org/tracker/task/6117 and I'll see if I can reproduce (to fix).

(Note there's a test build for the H120 available, but I can make others if asked.)

It seems that this should be reproducible with default settings, but if you suspect it requires a particular configuration (e.g. dircache enabled) then please attach your CFG file too.

pondlife
Title: Re: Screeching Whitenoise
Post by: delorean90 on October 07, 2006, 05:00:08 PM
if i may add my input i had the same screeching noise on my h10 and what i did to stop it was i turned off the beep function and after i did that i never had the problem again
Title: Re: Screeching Whitenoise
Post by: sdotone on December 18, 2006, 04:12:58 PM
ouch. I'm getting this.. and I just installed the latest daily build yesterday. I'm using an iPod Video 5G 60GB..

The screeching doesn't go away, even if I fast forward or skip tracks, I mean I can press pause and I'll stop hearing it, but if I resume it'll continue on with the screeching. It wont go away, until I completely restart my iPod.

My MP3's range from 120kbs - 320kbs. Depending on album/mixtape. And it seems to happen with just about any one. No specific time that it starts.. Seems random, IMO.

So, was this issue ever fixed? with a patch maybe? ionno.
Title: Re: Screeching Whitenoise
Post by: Llorean on December 18, 2006, 04:40:09 PM
If you notice, you're the first person to report the problem since October. Why not give us a bit more information about it. How many times has it happened to you? What details can you give about the files it happened in? What are your settings set to, that you've changed from default?
Title: Re: Screeching Whitenoise
Post by: sdotone on December 18, 2006, 04:47:23 PM
lol, I noticed.. which was exactly why I said "So, was this issue ever fixed?"

Anyway.. How much more info do you need..? It's all default.. After installation.. I added my music and played and it occurred.
Title: Re: Screeching Whitenoise
Post by: Llorean on December 18, 2006, 04:55:34 PM
Notice the *specific* questions I asked:
How many times has it happened to you?
What details (note the word DETAILS) can you give about the files it happened in? (This would include specific bitrates for each of them, if you can.)

So you haven't changed any settings at all, such as shuffle mode or equalizer or bass/treble? As well, are you playing using a playlist, or dynamically by just clicking on a song?
Title: Re: Screeching Whitenoise
Post by: sdotone on December 18, 2006, 05:26:00 PM
How many times? Most of the time.. I'll maybe get one or two songs to play.

Bitrate? Let's see..

199Kb (1:00 skit) (.mp3) Seemed to play well.
switched to 186kb (3:40 song) (.mp3) played well..

now on a 214kb (.mp3 4:05 song) and about a minute in it started screeching. This time freezing the entire thing.. Had to restart it by holding menu and select.

now playing a 144kb (.mp3) about 1 and a half minute in it started screeching..

restarted.

now playing 160kb (1:20 .mp3).. played through fine.

now playing a 235kb (2:28 .mp3) started screeching 10 seconds in..

didn't restart..

now playing a 192kb (1:18 .mp3) no screech anymore,  played fine..

now playing 191kb (4:00 .mp3) played fine.

192kb (4:29 .mp3) screeched 20 seconds in..

Don't want to go through anymore.. hopefully that's enough?

Title: Re: Screeching Whitenoise
Post by: Llorean on December 18, 2006, 05:30:34 PM
What about the last question?
Title: Re: Screeching Whitenoise
Post by: sdotone on December 18, 2006, 05:38:28 PM
Hmm.. I can't help but notice I answered your question in my previous post before yours. I guess you needed verification?  -_^

I don't know if I could make it any more clear other than it's default, I installed and am still running every setting it had. Didn't change a single thing. Only difference I made was dragging my music into the music folder.
Title: Re: Screeching Whitenoise
Post by: Llorean on December 18, 2006, 05:38:54 PM
The last question, not the second to last question.
Title: Re: Screeching Whitenoise
Post by: sdotone on December 18, 2006, 05:40:24 PM
Either one.

Whether it's by playlist or individual song. the list I made was from using both methods.
Title: Re: Screeching Whitenoise
Post by: Llorean on December 18, 2006, 05:44:27 PM
When you run a playlist of songs all in the same folder, does it still happen?
As well, if you put a single song on repeat does it happen?

In the past, if I recall, one of the times this kind of thing would happen would be on directory change (involving the automated one) but it seems possible something new is going on.
Title: Re: Screeching Whitenoise
Post by: sdotone on December 18, 2006, 05:55:40 PM

When you run a playlist of songs all in the same folder, does it still happen?
Yes

As well, if you put a single song on repeat does it happen?
Going to test it out.. Hmm, each song I tested.. it started screeching before it could go on repeat. Although I could repeat a 26 second intro without any problems.
Title: Re: Screeching Whitenoise
Post by: Llorean on December 18, 2006, 05:58:17 PM
Okay, the fact that you're the only person experiencing and reporting such a readily recurring problem leads us into the next stage: What's different about your situation.

You've stated that the settings are clear.
You've stated that you're using a Daily build from a day or two ago. I assume you mean an unmodified daily build, downloaded from the download link at the left: Have you tried updating to the newest CVS version from the CVS Builds link?
What bootloader do you have installed?
Title: Re: Screeching Whitenoise
Post by: Febs on December 19, 2006, 10:43:09 AM
It's all default.. After installation.. I added my music and played and it occurred.


Have you tried actually clearing the settings using Manage Settings --> Reset Settings?  Installing a new build does not reset the settings to default, and it's not clear from your prior posts whether you developed this problem when you initially installed Rockbox or when you updated to a new build.

Title: Re: Screeching Whitenoise
Post by: killsforpie on December 28, 2006, 01:33:33 AM
I've had my video ipod for all of two days and immediately searched for mods. I gotta say, rockbox is great, giving me the flexibility i wanted with my ipod. I have been using unmodified daily builds and have gotten that terrible terrible screeching noise. I haven't used the ipod very much, but i use 192kb mp3's and so far I've only had this problem in my car. Could it be caused by vibrations from my not so great suspension? i am currently using a custom theme but had no problems playing audio using one of the default themes when i first installed rockbox and was able to listen to several cds over about an hour in my car.

the problem always happens at the beginning of a song, after about one or two songs. the problem does sound exactly like static and stops if i pause the mp3s. so far i haven't found a way to fix it without rebooting my ipod. i'll try using a default theme again and see if that clears up the problem. let me know if you want any more information.
Title: Re: Screeching Whitenoise
Post by: killsforpie on January 02, 2007, 09:31:15 PM
UPDATE: Well I just came back from a car trip, using a rockbox daily build for the entire 7+ hours (round trip) while using the default theme. I only had the static problem once, but it did still occur even after turning off the hardware/software eqs. The screen did freeze, though the music continued, a few times (I believe this is due to a bug with the peek meters?). The time the static problem did start the meters weren't frozen, it was after selecting a short ep, all in one folder, to play, and I couldn't reproduce the bug through other plays of the ep, all starting from the first song. Again the files are encoded using a LAME encoder at 192 kb for the mp3s.
Anybody else still experiencing this problem? It really doesn't happen that much anymore, but it is pretty painful to my ears when it does.
Title: Re: Screeching Whitenoise
Post by: keenerd on January 03, 2007, 08:57:05 PM
I had this happen on an iriver H10 when running the Dec 22 daily build.  It happened once, and power cycling (maybe a hard reset) fixed it.  I don't remember what the song/playlist was, but I immediately reloaded the same playlist without errors.

It hasn't glitched since, and I've given up on trying to reproduce the error with the old build.