Re: [Asterisk-Users] sound problem, please help!
Hi, I have noticed that most mobile phones (GSM and CDMA at least) seem to have a tendency to interrupt the incoming audio stream when the microphone levels get louder than a certain threshold (such as when you are speaking into it). I do not know exactly why this happens, nor whether it is something that happens in the handset (the handset mutes the incoming audio, which doesn't make much sense) or in the network (maybe to try to save bandwidth?). Also, the GSM codec is intended to intelligibly encode human speech, not general audio signals such as music. GSM uses approximately 6-8 times less bandwidth than G.711u/a, and the degradation in the quality of music and other non-speech signals is one of the tradeoffs that we make in order to not have the cost of mobile calls increase 6-8 times over. Maybe if Europe was as backward with its mobile systems as the United States currently is, you could try to get your users to call your system from analog mobile phones... They don't use digital compression (by definition, I suppose) and would probably work much better for your specific application ;). -Rusty On 11/25/05, Esteban Maestre [EMAIL PROTECTED] wrote: Hi all!I have a strange problem when using asterisk. I have configured asteriskto receive calls (FX0). In my configuration, I want asterisk to play musicwhileI record the caller's speech. If the caller does the call from a fixed line telephone, there is no problem, but in case the caller does thecall from a mobile GSM phone, the quality of the music he hears becomes sobad, and even more when he speaks.I have tried several codecs. Any idea or advice?thanks in advance,-esteban-___--Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing listAsterisk-Users@lists.digium.comhttp://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] sound problem, please help!
Hello, Rusty! Thanks for your reply... You have been the only one ;) Hahaha, it could become dangerous... ;) Well, I have been investigating it a little bit, and I guess the main reason is something related to what you have pointed in the first paragraph. I've found some interesting information here: http://www.privateline.com/PCS/GSM08.html There is an interesting article I've already tried to post, but toy can find it easily in the www above. regards, -esteban- I don't think you'd want to hear most of what I say when I am on hold, especially if I am on hold with a telephone company! It tends to be somewhat on the profane side. *grin* -Rusty On 11/25/05, Esteban Maestre [EMAIL PROTECTED] wrote: kind of... ;) I want to know what the people say when they are waiting... :P do you have any idea on what the problem could be? -esteban- Original Message From: Esteban Maestre [EMAIL PROTECTED] To: asterisk-users@lists.digium.com Sent: Friday, November 25, 2005 11:22 AM Subject: [Asterisk-Users] sound problem, please help! Hi all! I have a strange problem when using asterisk. I have configured asterisk to receive calls (FX0). In my configuration, I want asterisk to play music while I record the caller's speech. Dialup-karaoke? :-) Leif ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[Asterisk-Users] sound problem, please help!
Hi all! I have a strange problem when using asterisk. I have configured asterisk to receive calls (FX0). In my configuration, I want asterisk to play music while I record the caller's speech. If the caller does the call from a fixed line telephone, there is no problem, but in case the caller does the call from a mobile GSM phone, the quality of the music he hears becomes so bad, and even more when he speaks. I have tried several codecs. Any idea or advice? thanks in advance, -esteban- ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] sound problem, please help!
Original Message From: Esteban Maestre [EMAIL PROTECTED] To: asterisk-users@lists.digium.com Sent: Friday, November 25, 2005 11:22 AM Subject: [Asterisk-Users] sound problem, please help! Hi all! I have a strange problem when using asterisk. I have configured asterisk to receive calls (FX0). In my configuration, I want asterisk to play music while I record the caller's speech. Dialup-karaoke? :-) Leif ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] sound problem, please help!
kind of... ;) I want to know what the people say when they are waiting... :P do you have any idea on what the problem could be? -esteban- Original Message From: Esteban Maestre [EMAIL PROTECTED] To: asterisk-users@lists.digium.com Sent: Friday, November 25, 2005 11:22 AM Subject: [Asterisk-Users] sound problem, please help! Hi all! I have a strange problem when using asterisk. I have configured asterisk to receive calls (FX0). In my configuration, I want asterisk to play music while I record the caller's speech. Dialup-karaoke? :-) Leif ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
