similar to: Is real-time encoding possible with ARM7 @ 66mHz?

Displaying 20 results from an estimated 1000 matches similar to: "Is real-time encoding possible with ARM7 @ 66mHz?"

2007 Aug 15
2
pcspkr wave encoding
Hi, there is an interesting case when the FLAC encoder (using 1.2.0) is given simple waves. Simple waves means: I have a list of {frequency, duration, pause} tuples that define the monophonic tune. In other words, exactly one frequency is played at a time. This is the original dataset from 1989 (driving a PC speaker back then): $ ls -l ihold.sd -rw-r--r-- 1 jengelh users 20616 Aug 14 00:57
2001 Feb 26
2
Mono wavs with b4
When I encode a monophonic wav file, I would expect the resulting ogg file to be at about half the bit rate specified on the command line, as stated in the "oggenc -h" help text: "The 6 modes are approximately 112, 128, 160, 192, 256, and 350 kbps (for stereo 44.1kHz input. Halve these numbers for mono input).". This doesn't seem to be happening, though. I took a 16-bit,
2014 Dec 03
2
[PATCH] Improve LPC order guess
Op 03-12-14 om 15:49 schreef Olivier Tristan: > [...] > If you want to check this on a single piano note, I would be > happy to know if this improves the monophonic use case as well. This sample is indeed a case where the retuning of FLAC 1.3.1 shows a severe regression. It seems the patch does work quite well in this case, but it does not fully fix the regression. FLAC 1.3.0 -5:
2006 May 29
0
smbd hanging at BDC
Hi all I have a samba pdc(master LDAP Server) with 1 BDC(slave ldap server), the version of Samba at PDC and BDC is samba 3.0.21c. At BDC , there are some shares declared. The shares are used to store Fox pro files. The client uses foxpro and opens DBF file in the share declared. and also Roaming profiles is also used at BDC. The problem is samba hangs frequently. Once rebooted works for some
2015 Jun 22
3
CentOS on ARM7 (eg Raspberry Pi)
I saw in the anouncement for the upcoming Boston, MA conference that there will be demos of CentOS on an ARM7 system. I am wondering: does this mean that there is somewhere out there a build of some version of CentOS that might run on a Raspberry Pi (which has an ARM7 processor)? -- Robert Heller -- 978-544-6933 Deepwoods Software -- Custom Software Services
2006 Mar 28
0
ARM7 decode resource requirements
Hi Tom Thanks, just at the feasibility phase right now, so this sort of info is really useful. Memory/MHz values for the Tremor/Vorbis code seem to vary wildly - at least I could not find a consistent set of numbers after trawling through the discussion groups... Thanks John -----Original Message----- From: tom abcd [mailto:tom.abcd@gmail.com] Sent: 28 March 2006 16:34 To: Anderton, John
2006 Mar 20
1
ARM7 Speex decoder
Dear All I ported the speex decoder in LPC2000 ARM7 family. Because I fetched the .ogg file from and external MMC card, I can only red a limited memory block 1) Can I decode only a block of a speex file at time ? /*Create a new decoder state in narrowband mode*/ state = speex_decoder_init(&speex_nb_mode); /*Set the perceptual enhancement on*/ tmp=1;
2006 Mar 28
2
ARM7 decode resource requirements
Hi all I'm looking in to using speex for an ARM7 based speech decode development (note we need the decode only). My hope is that we should be able to run the decoder (in wideband mode) real time on the ARM7 (40MHz) without any problems (the difficulty would be in the encode - but we plan to run that offline on a PC - so we should be OK). Can anyone confirm that this is the case please? Also
2006 Mar 29
1
ARM7 decode resource requirements
Hi Jean-Marc Thanks, >>>> I've never measured that, but it shouldn't take too much space, especially if you disable all the code (and possibly codebooks) that aren't used. so the 100kbyte ROM value quoted by Tom in his earlier mail should reduce if I cut out all the encoder code? Ta John -----Original Message----- From: Jean-Marc Valin
2004 Dec 13
1
Encoding performance on ARM7/9 ?
Hi, I have read the decoding side performance on ARM7 or ARM9. Your comment is very useful for us on evaluating the possible usage of Speex on our ARM system. How about the encoding performance? In your article, you mentioned "optimization". What is it? Is it included the 1.1.6 release source codes? thanks, Jay -------------- next part -------------- An HTML attachment was
2015 Jun 23
0
CentOS on ARM7 (eg Raspberry Pi)
On 06/22/2015 11:26 AM, Robert Heller wrote: > I saw in the anouncement for the upcoming Boston, MA conference that there > will be demos of CentOS on an ARM7 system. I am wondering: does this mean that > there is somewhere out there a build of some version of CentOS that might run > on a Raspberry Pi (which has an ARM7 processor)? > The Pi2 is armv7 .. the original pi is armv6.
2007 Sep 07
0
Speex and the ARM7 Core
2007/9/6, Brett Humphrey <directgumby@hotmail.com>: > > Hello, > Hi Brett, > I'm sorry if this is not the correct place to ask this question but what > I'm looking for is any data on the reality of Speex working on an ARM7 core? > I'm looking at doing a few diffrent projects where I will be using a proc > such as the LPC2378 with the ARM7TDMI-S core
2000 Dec 16
0
joint multichannel coding (long message)
I've got an idea for joint multichannel coding. Here is my idea: My idea is a process for coding 2,3,4 or 5 combined channels, in a compatible way for decoders unable to deal with combined channels. part1: All channels to be coded are summed, each one effected by a coefficient related to its sound power importance for the listener. The sum of all channels is devided by the square root of the
2007 Sep 07
4
Speex and the ARM7 Core
Hello, I'm sorry if this is not the correct place to ask this question but what I'm looking for is any data on the reality of Speex working on an ARM7 core? I'm looking at doing a few diffrent projects where I will be using a proc such as the LPC2378 with the ARM7TDMI-S core running at 72Mhz (although errata show only 60Mhz is currenlty possible). Do you know if there is a port
2006 Mar 22
1
ARM7 Speex decoder
Dear Ralph Thank you for your info. My file_read() function only get a specified number (nbBytes) of bytes from the .ogg file and store it in cbits, nothing else lb = file_read(&file, nbBytes, (void *)cbits); Unfortunately I have only 32K (first section) + 8 (second section) = 40 Kbyte of RAM to do all, including the file system management (I get the FS from the EFSL project). Speex
2018 Mar 14
1
Does llvm support for the arm7(ARM7EJ-S) (ARMv5TE) properly?
I was trying to using llvm to targeting ARMv5TE -- 此致 礼 罗勇刚 Yours sincerely, Yonggang Luo -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20180314/b9dadc37/attachment.html>
2007 Aug 24
1
Speex on ARM7
Hello I'm testing SPEEX on embedded board using ARM7 (Atmel). ARM7 don't have floating point so I'm using FIXED_POINT. Unfortunately the encoding speed is about 5 times slower then necessary for real time. ARM7 is slow for 16/8 bits operations. The sequence: static inline spx_word32_t compute_pitch_error(spx_word16_t *C, spx_word16_t *g, spx_word16_t pitch_control) {
2006 Mar 21
1
ARM7 Speex decoder
Dear Jan My intention is to read a piece at time of an .ogg file (stored in and external Multimedia card) decompress it and render it on and LPC2000 DAC. Because I don't have enough RAM memory to load the complete ogg file, I must read only a piece of file at certain time, then decompress and render it, and repeat the previous process until the end of the file. The problem is that I don't
2004 Jan 10
3
return() undocumented (PR#6424)
Full_Name: Scot Wilcoxon Version: 1.8.1 OS: Linux Submission from: (NULL) (209.98.144.16) return() is not documented. It should also be mentioned in the R Reference section for function(). Apparently the last result of a function is the return value from a function, except when the function is terminated with a return() with an argument.
2006 May 09
7
Problem Installing Freebsd 6.0 64 bit
I can't install freebsd 6.0 STABLE amd64 on my notebook: HP Pavilion 2420la AMD Turion ML 32 , 1024 RAM, 80 GB HD, ATI Radeon XPRESS 200M. I try all modes , default, whitout acpi, safe mode. In all the cases after the next message the installation doesn't work: timecounters tick every 1000 msec Linux ELF exec handler install lo0.bpf attached I installed linux with parameter noapic