Hi
I will be using a portable player (iAudio-5) with an AAA battery in it to playback my Ogg-Vorbis music files. iAudio claim 20 hours battery life for playback, but I know it will be less, esp. with ogg vorbis.
Now, does it make much difference if I encode at q0 (about 64kbps) or q6 (about 192kBps)?
I mean, is the decoding of q0 less CPU intensive than decoding of q6 files? (if it is, then the battery
should last longer for q0, anjd so give me more tracks played back for a given battery.)
Anyone have any experience with this?
Also, is _encoding_ to q6 any quicker/slower than encoding to q6? ( I am using vorbis version
1.01 (and sometimes the older RC3, which I believe is a lot slow to encode???))
Finally, how much more CPU power/battery juice does playback of an Ogg file use compared
with MP3 or ATRAC at a similar bit rate?
Any feedback would be much appreciated.
Thanks in advance. :-)
Full Version: Best q for min CPU power/max battery life?
QUOTE
Also, is _encoding_ to q6 any quicker/slower than encoding to q6? ( I am using vorbis version
1.01 (and sometimes the older RC3, which I believe is a lot slow to encode???))
1.01 (and sometimes the older RC3, which I believe is a lot slow to encode???))
The latest Lancer/Archer of the AoTuV series based upon Vorbis 1.1 has shown a considerable speed improvement in terms of encoding. Their have been a lot of other compiler optimizations for different platforms as well (SSE, SSE2, etc). Check out http://www.rarewares.org/ogg.html for binaries.
QUOTE
Finally, how much more CPU power/battery juice does playback of an Ogg file use compared
with MP3 or ATRAC at a similar bit rate?
with MP3 or ATRAC at a similar bit rate?
Others can fill in the detail from hands on experience (their are various factors), but Vorbis decoder will normally use more CPU and battery power than MP3. A lot of this doesn't just have do with the speed of the fixed-point implementation in general, but also due fact that there is a lot of unused "code" in the encoder that's not being used that should be dumped
.
Expect to see a 20-25% reduction in battery life when using ogg vorbis over mp3LAME. To my ears its worth the price but you need to ABX it against MP3LAME to be sure the same holds true for you.
It is hoped that future versions of ogg are a bit more battery friendly in DAP's as it is a great codec IMHO.
rs
It is hoped that future versions of ogg are a bit more battery friendly in DAP's as it is a great codec IMHO.
rs
QUOTE(rickshaw @ Jun 25 2005, 07:14 PM)
Expect to see a 20-25% reduction in battery life when using ogg vorbis over mp3LAME. To my ears its worth the price but you need to ABX it against MP3LAME to be sure the same holds true for you.
It is hoped that future versions of ogg are a bit more battery friendly in DAP's as it is a great codec IMHO.
rs
It is hoped that future versions of ogg are a bit more battery friendly in DAP's as it is a great codec IMHO.
rs
On the Samsung Yepp MT6, there's almost no difference at all in playtime between Ogg and MP3. I've also experimented with bitrate too, and it's almost the same either way.
Just use whatever sounds best to your ears, and forget about the battery life.
I don't know much about the iAudio, but the Samsung gets almost 45 hours on a battery every time, whether it's Ogg or MP3. YMMV.
QUOTE
On the Samsung Yepp MT6, there's almost no difference at all in playtime between Ogg and MP3. I've also experimented with bitrate too, and it's almost the same either way.
Does it plays Ogg Vorbis gaples and which min and max bitrate does it support?
This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please click here.