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How To Read this to improve call sound quality!!!

nicelysedated said:
t's in the Programming menu. Use the Programming Menu at your own risk. There are options/settings in this menu that should not be manipulated. That's my disclaimer
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On your dialpad dial ##PROGRAMthen press SEND

The SPC password is 000000

Now you should be at the Programming Menu. From the list press "04 Vocode"

Now you can select 13k, EVRC (default option), or EVRC-B

After you select one, back out to your home screen and your phone will reset.

That's it.

Keep in mind, I don't really understand why EVRC-B isn't already the default option on this phone. There may be a good reason. There may not. Hopefully someone from Verizon or Motorola will chime-in and answer my original post.

Enhanced Variable Rate Codec - Wikipedia, the free encyclopedia

Enhanced Variable Rate Codec B - Wikipedia, the free encyclopedia


Posted by SOOBS on Moto forum! thank him!
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Gave it a shot, we will see what happens. I will also check the equipment guide for the quick programming to see about anymore tidbits.
 
I change mine to -B and did voice mail test calls. i could not tell a difference in Northern Ohio.
I would take a guess in a busy urban area with new towers you can take advantage of -B but in rural areas with older towers maybe they can't take or do not need the advantage of lower bit-rates on -B.
Just a thought
 
I was thinking the same thing - but I went ahead and enabled it anyway.

Problem is, I haven't gotten a call to test it with lol....
 
Still going strong here. Nothing but good comments from other callers. I can also understand my wife much better since changing them on our Droids.
 
bump. anyone who adjusted the above settings care to report back now that time has passed? looking to know what folks are finding works best.
 
Mortgage_It said:
bump. anyone who adjusted the above settings care to report back now that time has passed? looking to know what folks are finding works best.
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When talking to other cell phones, I don't really notice any difference at all. When talking to a land line though, the quality seems quite high. I don't call enough to know how it effects battery life and such.

Every once in a while it will be a bit echo-y, but I'm not sure if that's the fault of the call mode or not.
 
I have tried all 3 of them. I can not tell a difference. I had high hopes when I did try them that it would make my phone sound better. The sound that is coming out of my ear piece sounds like it's got a lot of bass and no treble.

Just sounds like something is missing.
 
dunno if this is known, i skimmed through the thread and did not see it...

But if you hold down the "home" key, you can go into the programmers menu instead of sending that code through the dialer
 
gotwillk said:
i saw an option called "05 Data Rates" and in it my phone has the 153.6/9.6 selected. scrolling down the list i see that there's an option to select 153.6/153.6. looks like this is for up and down speeds and it seems like it would be faster if i selected this. faster for what?
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I wondered the same thing. I connected via Wi-Fi to my Verizon FiOS router, which has symmetric internet connectivity at 25Mb/s both up and down. Using the default settings on the Droid, I see the SpeedTest needle pinned at a solid 10Mb/s down, but only get 1MB/s up. That would seem to jibe with the default '05 Data Rates' settings. But even after changing them to 153.6/153.6, I saw identical results although I'd expected to see 10Mb/s in each direction.

I also tried 3G connectivity with both settings. My home is in a very weak signal area for VZW Wireless, so I have yet to see EVDO speed test numbers here showing much more than about 300-400k down (I get about 4x those speeds in other parts of town that are closer to towers). But after making the change to 153.6/153.6, I am suddenly seeing 800-900k down very consistently.

Neither result makes any sense to me: Why would I not see equal speeds up/down via my wi-fi link after making the change? And why would a change to the upload speed limit cause the download speeds of a 3G connection to improve? All very strange. Anyway, I'm going to leave the setting at 153.6/153.6 for awhile just to see what happens in actual usage, and to see if I continue to experience the higher download speeds in a weak-signal area.

Has anyone else tried changing this setting?
 
Maybe it not speed as much as signal strength. So like any Wicklund adapter on a PC you can adjust the signal strength. I would test the battery life...increasing the strength would increase the battery usage
 
Just my 2 cents, I tired it out and it didn't do much for the quality of the calls for me. I ran it for a couple days, no big differences but good idea to try if your calls are really bad, didn't brick or anything.
 
EvilLinux said:
Just my 2 cents, I tired it out and it didn't do much for the quality of the calls for me. I ran it for a couple days, no big differences but good idea to try if your calls are really bad, didn't brick or anything.
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That's because you're only changing the codec "on your phone". If you're calling someone with lesser quality audio/network settings, you won't hear a difference...but they may.

Only changing it to 13k will there be any audible differences.

Changing from EVRC -> EVRC B, just adds an additional codec (a compressed one at that) at a slow bandwidth level, over EVRC. So as your signal "degrades", and bandwidth throttles back, there is an additional level above "worst" where audio quality would be higher, at a given bandwidth.
 
colnago said:
That's because you're only changing the codec "on your phone". If you're calling someone with lesser quality audio/network settings, you won't hear a difference...but they may.

Only changing it to 13k will there be any audible differences.

Changing from EVRC -> EVRC B, just adds an additional codec (a compressed one at that) at a slow bandwidth level, over EVRC. So as your signal "degrades", and bandwidth throttles back, there is an additional level above "worst" where audio quality would be higher, at a given bandwidth.
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Yeah I noted that from reading the info in the post and having done this on other phones in the past. There was no change in the call quality to my friends\family so I just changed it back to default.

On a random side note, does any have any issue with people hearing you when you have your phone shoulders, your holding your phone to your face with your shoulder? Most of my friends have a hard time hearing unless I move it really close to my mouth or speak extremely loud (almost yelling).
 
EvilLinux said:
Yeah I noted that from reading the info in the post and having done this on other phones in the past. There was no change in the call quality to my friends\family so I just changed it back to default.

On a random side note, does any have any issue with people hearing you when you have your phone shoulders, your holding your phone to your face with your shoulder? Most of my friends have a hard time hearing unless I move it really close to my mouth or speak extremely loud (almost yelling).
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I have that same exact problem - and it's extremely annoying to me. Last night i switched the "voice privacy" setting and that, in conjunction with making the aforementioned switch, seems to have helped a bit. I don't like holding things up against my face. Plus is makes the screen look dirty from skin oils.
 
Folks this is a basic view on 13K, EVRC and EVRC-B.

13K was the first codec brought out in CDMA and will sound more like you however it uses more bandwidth (not your issue)

EVRC was introduced next and helped with the bandwidth but you may notice a little change in your voice or whom your talking too.

EVRC-B is a new codec and is even better on bandwidth.

This bandwidth thing is on the network side at the switching center and has nothing to do with how much bandwidth you use etc......


Now your phone is defaulted to EVRC because most switching centers have already upgraded their equipement to handle the EVRC codec, that means that the equipement used to support 13K is still there but they are not investing in it, meaning they are not expanding the network with 13K codec type equipment. So whatever they had, lets say 2 years ago, they still have, they have not added. Hope that makes sense.

Now with EVRC-B being new, switching centers (or providers such as Verizon) is upgrading to EVRC-B however they do not have it everywhere just yet hence your phone defaulting to the EVRC codec.


Now for the extra part here.

If Verizon in "City A" has EVRC-B and your phone is set to EVRC then the switching center decides to give you a EVRC resource or a 13K resource depending on what they have available at the time of your call.
If you set your phone to 13K then YOUR forcing your phone to only go to 13K, so the switching Center will try to get you a 13K resource, IF available. If its not available then You dont get a resource! Remember 13K resources are limited as they are not adding 13K type resources anymore as more and more phones can support EVRC and EVRC-B.

So now if you go to a market that has Zero 13K resources and your phone is set to 13K then guess what, you cant place a call.

I am sure when time comes and EVRC-B is everywhere, then Verizon will somehow make the default EVRC-B But that will be a long time coming because they are not just going to get rid of the current resources they have of 13K and EVRC. So then the rollover of Resources available will be -> EVRC-B if not available go to EVRC -> if not available to go 13K.

Hope this helps. :)
 
So if we setup the phone to use EVRC-B, then we will have the most opportunities to complete a call no matter how the towers are configured (because that setting allows for any of the resources to be used on a tower)?

What is the difference in quality between 13K and EVRC-B?
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eraymond said:
So if we setup the phone to use EVRC-B, then we will have the most opportunities to complete a call no matter how the towers are configured (because that setting allows for any of the resources to be used on a tower)?

What is the difference in quality between 13K and EVRC-B?
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Its not at the towers its at the switching center ;) but yes the idea is that if there are no EVRC-B resources it will look for EVRC if no EVRC then it will go to 13K if no 13K you dont make a call. Basically in that order.
 
But wait, why wouldn't Verizon just default us to EVRC-B in that case so we can take advantage of new technologies if they're available in the area?
 
Is this a Verizon thing? If so, this thread ought to be moved to the Carriers: Verizon forum.

Edit: From next page in this thread...
troybal said:
This is also not just Verizon specific this is specific to CDMA.
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If not, then what's the numeric equivalent of "##PROGRAM"? I guess it's "##7764726", but I'm not sure -- dialling that performs a phone call, which is of course rejected due to incorrect number (and will, oddly, appear as two calls in the call log).
 
n9zez said:
Still going strong here. Nothing but good comments from other callers. I can also understand my wife much better since changing them on our Droids.
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This is my scenerio, as well (wife & I have Droids). My whole family are also on Verizon plans.
So how "much better" is it, n9zez? I think I'll give it a shot pending your response.

So trybal, what you are saying, if I have this correct, is that the newer codecs coming out (...which are presumably phasing out the old ones) are slightly sacrificing voice quality for better bandwidth efficiency at the source or "hub"?
 
Psychokitty said:
So trybal, what you are saying, if I have this correct, is that the newer codecs coming out (...which are presumably phasing out the old ones) are slightly sacrificing voice quality for better bandwidth efficiency at the source or "hub"?
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That is correct but they are not removing the old codec resources they are just not adding more of the older resources.
Once they have enough EVRC-B resources they will allow mobile phones that are capable of EVRC-B to make a call as that's what they want you to use first.
This is also not just Verizon specific this is specific to CDMA.
 
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