Ⅰ linux Mint 13 Sound Recorder报错不能启动
1.试试 apt-get install
2.google该工具官方页面
Ⅱ ubuntu alsa声音独占问题怎么解决
Ubuntu下应用程序独占音频声道的问题解决【方法一】（针对无声或音频独占）干掉Pulseaudio，只使用Alsa执行以下命令：sudo apt-get install alsa-oss libasound2 libasound2-pluginssudo mv /etc/X11/Xsession.d/70pulseaudio ~/gconftool-2 -s -t bool /apps/gnome_settings_daemon/plugins/sound/active false#注意：gconftool-2 false 整个是一条命令，请输入在同一行。asoundconf unset-pulseaudiosudo update-rc.d -f pulseaudio remove然后执行asoundconf list输出应该是类似这样的情形：Names of available sound cards:Intel（记下你的声卡名，比如这里的Intel）然后执行：asoundconf set-default-card Intel（Intel请替换为你的声卡名）（补充：个别用户会出现真正的声卡名和HDMI两个选项，请注意不要选HDMI（除非你输出到液晶电视））如果想保留登入时的系统提示音，请编辑~/.bashrc文件：gedit ~/.bashrc在文件末尾加上：export SDL_audiodriver=alsa最后，打开系统->首选项->音效，将从上往下数前四个选项都选成 ALSA - Advanced Felix注：经测试，不这么做好像也没问题。至此，屏蔽pulseaudio并设置alsa已经完全解决。【方法二】（针对音频独占）我们让已经在成功运行于PulseAudio的继续使用PulseAudio。只支持ALSA的软件，继续使用ALSA。解决方法：gksu gedit /etc/pulse/default.pa找到：#load-mole mole-alsa-sink 改为load-mole mole-alsa-sink device=dmix找到:load-mole mole-suspend-on-idle改为#load-mole mole-suspend-on-idle(重新logout再login）另外:找到: (解决录音问题，如skype和audacity)load-mole mole-hal-detect改为:#load-mole mole-hal-detect这样，通过使用dmix，PulseAudio就不会霸占整个audio系统。PulseAudio将成为alsa的其中一个Mix Channel。然后，ALSA和PulseAudio便能很好地共存。以后都不再需要什么libflashsupport for pulseaudio了。还有，安装PulseAudio的控制器，好好享受PulseAudio的优势吧。sudo apt-get install padevchooser【方法三】（针对无声）（注：如果点击屏幕右上的小喇叭图标，出现一个错误提示，则可以直接采用此方法）如果以上设置仍然无效，可以尝试下载编译安装新版的alsa（注：安装之前，请确认自己的内核为源里的最新版）首先到/下载最新的alsa-driver，alsa-lib和alsa-utils。假设下载的文件放在~/alsa (/home/用户名/alsa)。首先进行解压：tar jxvf alsa-driver-xxx.tar.bz2tar jxvf alsa-lib-xxx.tar.bz2tar jxvf alsa-utils-xxx.tar.bz2然后分别编译安装cd ./alsa-driver-xxx./configure && makesudo make installcd ../alsa-lib-xxx./configure && makesudo make installcd ../alsa-utils-xxx./configure && makesudo make install重启计算机（注意不是重启X）
Ⅲ ubuntu怎么用audacity
使用HTK过程中，第一步使用HSLab录音和标签功能时，提示找不到/dev/dsp。显然只有旧的内核才支持OSS声音架构。最新的ALSA是没法被HSLab使用的。怎么办呢？网上提供了一些解决方法，但都不太彻底。索性换个思路，使用其他软件来替换录音和标签功能。很容易就选中了Audacity。
图文并茂的教程:Audacity 音频编辑器教程 http://teliute.org/linux/Teauda/lesson7/lesson7.html
遇到了问题。pulseaudio服务器的问题。
sudp apt-get install audacity 安装很顺利。可是一直有一个问题没解决，就是录音文件存哪里去了？Audacity 录音放哪里了。看来还是命令行的思路。
audacity录音后，可以通过菜单下面的file-export来存到磁盘。
http://yulife.blog.163.com/blog/static/120333049200972810395446/ 录音质量问题： ubuntu 下的录音软件Audacity
http://www.voxforge.org/home/forums/message-boards/speech-recognition-engines/can-htk-only-process-the-audio-files-generated-by-hslab-the-.sig-format 老外遇到类似问题
1.安装并打开pavucontrol（pulse音频管理程序）
2.打开Audacity，设置音频主机平台为ALSA，输出为default，录音音频输入default:
3.按下audacity，在pavucontrol的录音选项卡，将audacity的录音来源设置为：moniter
4.如果进行以上操作后，仍然无法录音，则删除 ～/.pulse，再重新启动机器修复pulse音频管理再试试。
在删除~/.pulse目录后，运行pavucontrol 提示。How to fix “connection to pulseaudio failed”
logout/login就可以了。
再不行的话，另一个解决思路：在使用cmusphinx 时，用到了一个录音工具：
Ⅳ ubuntu怎么安装audio插件
使用如下命令：
sudo apt-get install libpulse-dev
安装时会提示依赖于下面这几个软件，一并安装即可：
libavahi-client-dev libavahi-common-dev libpulse-mainloop-glib0 libpulse0
这个也可以上packages.ubuntu.com官方网址查询libpulse-dev软件的依赖关系，相关链接如下：
http://packages.ubuntu.com/raring/libpulse-dev
如下图所示：
二、pulseaudio库的使用（同步simple API）
pulseaudio官网有关于pulseaudio的API doxygen使用手册，网址如下：
http://freedesktop.org/software/pulseaudio/doxygen/
1、播音sample
A simple playback tool using the simple API
//pacat-simple.c
/***
This file is part of PulseAudio.
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <pulse/simple.h>
#include <pulse/error.h>
#define BUFSIZE 1024
int main(int argc, char*argv[]) {
/* The Sample format to use */
static const pa_sample_spec ss = {
.format = PA_SAMPLE_S16LE,
.rate = 44100,
.channels = 2
};
pa_simple *s = NULL;
int ret = 1;
int error;
/* replace STDIN with the specified file if needed */
if (argc > 1) {
int fd;
if ((fd = open(argv[1], O_RDONLY)) < 0) {
fprintf(stderr, __FILE__": open() failed: %s\n", strerror(errno));
goto finish;
}
if (p2(fd, STDIN_FILENO) < 0) {
fprintf(stderr, __FILE__": p2() failed: %s\n", strerror(errno));
goto finish;
}
close(fd);
}
/* Create a new playback stream */
if (!(s = pa_simple_new(NULL, argv[0], PA_STREAM_PLAYBACK, NULL, "playback", &ss, NULL, NULL, &error))) {
fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
goto finish;
}
for (;;) {
uint8_t buf[BUFSIZE];
ssize_t r;
#if 0
pa_usec_t latency;
if ((latency = pa_simple_get_latency(s, &error)) == (pa_usec_t) -1) {
fprintf(stderr, __FILE__": pa_simple_get_latency() failed: %s\n", pa_strerror(error));
goto finish;
}
fprintf(stderr, "%0.0f usec \r", (float)latency);
#endif
/* Read some data ... */
if ((r = read(STDIN_FILENO, buf, sizeof(buf))) <= 0) {
if (r == 0) /* EOF */
break;
fprintf(stderr, __FILE__": read() failed: %s\n", strerror(errno));
goto finish;
}
/* ... and play it */
if (pa_simple_write(s, buf, (size_t) r, &error) < 0) {
fprintf(stderr, __FILE__": pa_simple_write() failed: %s\n", pa_strerror(error));
goto finish;
}
}
/* Make sure that every single sample was played */
if (pa_simple_drain(s, &error) < 0) {
fprintf(stderr, __FILE__": pa_simple_drain() failed: %s\n", pa_strerror(error));
goto finish;
}
ret = 0;
finish:
if (s)
pa_simple_free(s);
return ret;
}
2、录音sample
A simple recording tool using the simple API
//parec-simple.c
/***
This file is part of PulseAudio.
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <pulse/simple.h>
#include <pulse/error.h>
#define BUFSIZE 1024
/* A simple routine calling UNIX write() in a loop */
static ssize_t loop_write(int fd, const void*data, size_t size) {
ssize_t ret = 0;
while (size > 0) {
ssize_t r;
if ((r = write(fd, data, size)) < 0)
return r;
if (r == 0)
break;
ret += r;
data = (const uint8_t*) data + r;
size -= (size_t) r;
}
return ret;
}
int main(int argc, char*argv[]) {
/* The sample type to use */
static const pa_sample_spec ss = {
.format = PA_SAMPLE_S16LE,
.rate = 44100,
.channels = 2
};
pa_simple *s = NULL;
int ret = 1;
int error;
/* Create the recording stream */
if (!(s = pa_simple_new(NULL, argv[0], PA_STREAM_RECORD, NULL, "record", &ss, NULL, NULL, &error))) {
fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
goto finish;
}
for (;;) {
uint8_t buf[BUFSIZE];
/* Record some data ... */
if (pa_simple_read(s, buf, sizeof(buf), &error) < 0) {
fprintf(stderr, __FILE__": pa_simple_read() failed: %s\n", pa_strerror(error));
goto finish;
}
/* And write it to STDOUT */
if (loop_write(STDOUT_FILENO, buf, sizeof(buf)) != sizeof(buf)) {
fprintf(stderr, __FILE__": write() failed: %s\n", strerror(errno));
goto finish;
}
}
ret = 0;
finish:
if (s)
pa_simple_free(s);
return ret;
}
3、编译含有pulseaudio库的时候，需要添加pulseaudio的动态链接库-libpulse等，
(可以在/usr/lib/i386-linux-gnu/目录下找到pulse的动态库
/usr/lib/i386-linux-gnu/libpulsecommon-1.1.so
/usr/lib/i386-linux-gnu/libpulsedsp.so
/usr/lib/i386-linux-gnu/libpulse-mainloop-glib.so
/usr/lib/i386-linux-gnu/libpulse-mainloop-glib.so.0
/usr/lib/i386-linux-gnu/libpulse-mainloop-glib.so.0.0.4
/usr/lib/i386-linux-gnu/libpulse-simple.so
/usr/lib/i386-linux-gnu/libpulse-simple.so.0
/usr/lib/i386-linux-gnu/libpulse-simple.so.0.0.3
/usr/lib/i386-linux-gnu/libpulse.so
/usr/lib/i386-linux-gnu/libpulse.so.0
/usr/lib/i386-linux-gnu/libpulse.so.0.13.5)
例如：
gcc -o pacat-simple pacat-simple.c -lpulse -lpulsecommon-1.1 -lpulse-simple
三、ALSA音频库
ALSA全称为：Advanced Linux Sound Architecture
一个网址为：http://www.alsa-project.org/main/index.php/Main_Page