Re: [mythtv-users] timestretch results in chipmunk sound
On Sun, 6 Mar 2005 13:46:32 -0600, Jeff Simpson [EMAIL PROTECTED] wrote: I'm not sure what everyone means by chipmunks. If it's referring to how all the voices sound higher in pitch, its normal - When you play audio faster, it's going to sound like that due to the frequency shift. Just like how when you play it at 0.5X it's going to sound like it's being acted by James Earl Jones. The timestretch feature of .17 is supposed to elimate the chipmunk sound and make it sound normal. I am not sure how the developers accomplished, but it is brilliant when it works. I have seen and heard it working on my FC1 system. This is the one thing that has not worked properly after the upgrade to FC2, in other words, I have chipmunks. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] timestretch results in chipmunk sound
am I right in thinking that? No, it works (not currently for me) by adjusting the pitch. When it works right, it is very cool! From the official mythtv page: Timestretch. Though, it's really 'time-compression'. This allows the user to adjust the playback speed slightly, but keeps the audio at the same pitch. If you're recording a lot of shows, timestretch lets you get through them faster. =) From the unofficial wiki: New Feature (libsoundtouch) * A new library has been integrated which allows the playback speed to be increased or decreased without causing a pitch shift. This allows folks short on time to increase the playback speed to something like 1.5x and finish a show quicker, without feeling like they're listening to the chipmunks. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] timestretch results in chipmunk sound
Time stretch works in very weird ways on my system (with a PVR-350) - If I pick 0.5X it works fine (usually). If I pick anywhere between 0.5X and 1.0X, it goes exactly 1X - If I pick 1.05X or anything faster, it goes REALLY fast. The jump between 1.00X and 1.05X is WAY more than that percentage. - Changing between 1.05X and 2.00X does change speed faster and slower, but only slightly. I did the math out and found that a 30s commercial takes 20s on 1.05X (so a calculated 1.5X). 2X might be pretty close to 2x, but it was hard to guage that one. Another bug I noticed is that if time stretch is on and you skip around, when it resumes, it plays at 1x, but the setting in the time stretch remains at whatever value was previously selected (so for example, run it at 1.2x, hit a skip, then it starts playing at 1x, but the checkbox will still be next to 1.2x) I love that feature and the fastforward feature, however, much nicer than the skip! (especially how the extreme fast forward skips back a little automatically when you stop it, assuming that the human reflex is slower than needed to stop fast forwarding when needed) - Jeff On Mon, 28 Feb 2005 17:29:40 -0400, stephen [EMAIL PROTECTED] wrote: Thom Paine wrote: On Mon, 28 Feb 2005 11:47:37 -0500, Nicholas McCoy [EMAIL PROTECTED] wrote: I've got the same problem, except that I never got it to work before. I have a pvr-350 and I'm using knoppmyth. When I installed 0.17 from cvs and it didn't work I assumed it was a hardware limitation. You said you got it working though. Are you using the video out from the 350? Has anyone else gotten this to work with the video out from the 350? I have this working with a 350, but I also have the chipmunks. I thought that was the way it worked. I tried it on 1.2x. I've also got the chipmunk thing on my 350. However, when using timestrech on my backend, the audio doesn't change to a higher pitch (hooked up to a montior via video card, no need for a tv-out or re-routing of the sound). Both systems are running Gentoo (2.6.10-gentoo-dev-sources-r7). I've noticed another odd thing -- if I choose a speed of 1.1, then go back to the menu to choose another, it shows 1.2 as being selected. The speed always seems to be one notch more than what was previously selected. (I think this was mentioned a few days ago, but I'm not sure ...) Stephen ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users -- email me if you want a gmail invite, I have some invites ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
[mythtv-users] timestretch results in chipmunk sound
I updated my FC1 this weekend, and had to reinstall the myth package due to some apt-wierdness. After doing this, I am no longer able to use the time stretch feature without the chipmunk effect. Is there another setting I need to change that I forgot to do? I tried to apt-get install libsoundtouch but that package was not found. This had worked prior to the upgrade, so I know it is not a hardware limitation, but if it matters I am using a pvr-350. Thanks. -- Email me if you want a gmail account, I have invites. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] timestretch results in chipmunk sound
I've got the same problem, except that I never got it to work before. I have a pvr-350 and I'm using knoppmyth. When I installed 0.17 from cvs and it didn't work I assumed it was a hardware limitation. You said you got it working though. Are you using the video out from the 350? Has anyone else gotten this to work with the video out from the 350? On Mon, 28 Feb 2005 11:01:10 -0500, Gabe Rubin [EMAIL PROTECTED] wrote: I updated my FC1 this weekend, and had to reinstall the myth package due to some apt-wierdness. After doing this, I am no longer able to use the time stretch feature without the chipmunk effect. Is there another setting I need to change that I forgot to do? I tried to apt-get install libsoundtouch but that package was not found. This had worked prior to the upgrade, so I know it is not a hardware limitation, but if it matters I am using a pvr-350. Thanks. -- Email me if you want a gmail account, I have invites. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] timestretch results in chipmunk sound
On Mon, 28 Feb 2005 11:47:37 -0500, Nicholas McCoy [EMAIL PROTECTED] wrote: I've got the same problem, except that I never got it to work before. I have a pvr-350 and I'm using knoppmyth. When I installed 0.17 from cvs and it didn't work I assumed it was a hardware limitation. You said you got it working though. Are you using the video out from the 350? Has anyone else gotten this to work with the video out from the 350? Yes it was working before, I wanted to mention that because a look through the archives shows that some (like you) have never got it to work with the PVR-350. I am using the 350 for video and sound. The sound is piped into my sound card which outputs to my tv/stereo. It had worked before the upgrade. It is possible that I somehow screwed up ALSA in the upgrade, although, my sound playback is fine. This is not a major issue for me as I hardly use the timestretch, but I would like to use it for certain shows. ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] timestretch results in chipmunk sound
On Mon, 28 Feb 2005 11:47:37 -0500, Nicholas McCoy [EMAIL PROTECTED] wrote: I've got the same problem, except that I never got it to work before. I have a pvr-350 and I'm using knoppmyth. When I installed 0.17 from cvs and it didn't work I assumed it was a hardware limitation. You said you got it working though. Are you using the video out from the 350? Has anyone else gotten this to work with the video out from the 350? I have this working with a 350, but I also have the chipmunks. I thought that was the way it worked. I tried it on 1.2x. -- -=/Thom ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] timestretch results in chipmunk sound
One more follow up. I notice that there is no libsoundtouch file on my system. Is this built into myth or do I need to get it to make timestretch working? I just find it odd that it did work at one point but doesn't now. Also, when I set the time stretch for 1.5x, I get the chipmunk effect (as earlier reported), but if I skip ahead, the voice goes back to normal. Unfortunately, so does the video speed (I believe). ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
Re: [mythtv-users] timestretch results in chipmunk sound
Thom Paine wrote: On Mon, 28 Feb 2005 11:47:37 -0500, Nicholas McCoy [EMAIL PROTECTED] wrote: I've got the same problem, except that I never got it to work before. I have a pvr-350 and I'm using knoppmyth. When I installed 0.17 from cvs and it didn't work I assumed it was a hardware limitation. You said you got it working though. Are you using the video out from the 350? Has anyone else gotten this to work with the video out from the 350? I have this working with a 350, but I also have the chipmunks. I thought that was the way it worked. I tried it on 1.2x. I've also got the chipmunk thing on my 350. However, when using timestrech on my backend, the audio doesn't change to a higher pitch (hooked up to a montior via video card, no need for a tv-out or re-routing of the sound). Both systems are running Gentoo (2.6.10-gentoo-dev-sources-r7). I've noticed another odd thing -- if I choose a speed of 1.1, then go back to the menu to choose another, it shows 1.2 as being selected. The speed always seems to be one notch more than what was previously selected. (I think this was mentioned a few days ago, but I'm not sure ...) Stephen ___ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
