我正在使用后置插孔麦克风,它是完美的工作与录音机或喜欢与谷歌搜索。但是当我在Python语音识别中使用它时,我不知道发生了什么。 import speech_recognition as sr
s = sr.Microphone() 当我运行这段代码时,它显示: ALSA lib pcm_dsnoop.c:618:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2495:(snd_pc
我想用麦克风录制音频。我的操作系统是ubuntu。我尝试了下面的方法,但得到了错误
$ ffmpeg -f alsa -ac 2 -i hw:1,0 -itsoffset 00:00:00.5 -f video4linux2 -s 320x240 -r 25 /dev/video0 out.mpg
ffmpeg version 0.8.8-4:0.8.8-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav
developers
built on Oct 22 2013 12:31:55 with gcc 4.6.3
*** THIS P
我试图运行我的二进制的虚拟板的ARM多功能轻量级板在Qemu。我使用这个命令来像这样运行它
qemu-system-arm -M versatilepb -m 128M -nographic -kernel test.bin
test.bin is my program. a really a simple program that writes to tty. but it gives me error that
ALSA lib confmisc.c:767:(parse_card) cannot find card '0'
ALSA lib conf.c:474
我似乎无法在任何集成的(使用Linux )视频/音频记录器上录制声音。我尝试从命令行中使用GUVCView,并得到以下错误:
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or directory
V4L2_CORE: (UVCIOC_CTRL_MAP) Error: No such file or
我无法在GUI和非GUI终端中使用morse实用程序:
# echo word | morse
Could not initialize audio: Connection refused
Can't access speaker.
为什么有此错误,以及如何将morse与alsamixer结合使用?
来自/usr/share/doc/morse/README:
Currently supported devices:
X11: The X11 window system. (Warning: not all X11 implementations handle
在我使用Jack之后,PulseAudio输出和输入将被一个虚拟设备所取代。我试图杀死PulseAudio并重新加载Alsa,但我唯一可以再次使用基于Alsa的应用程序的方法是重新启动。我知道一定有办法解决问题而不重新启动。我在多个Linux发行版中遇到了这个问题,包括Ubuntu和Fedora 19。
service alsa-utils restart的输出:
Redirecting to /bin/systemctl restart alsa-utils.service
Failed to issue method call: Unit alsa-utils.service faile
我在安装alsa驱动程序方面有问题。
以下是编译日志:
In file included from /home/aleks/alsa-driver-1.0.25/firewire/speakers.c:5:0:
/home/aleks/alsa-driver-1.0.25/firewire/../alsa-kernel/firewire/speakers.c: В функции «fwspk_card_free»:
/home/aleks/alsa-driver-1.0.25/firewire/../alsa-kernel/firewire/speakers.c:664:2: ошибка: