giorgosera's profile - activity

Alhough I am not 100% sure, the latency might come from both ROS' sound_play and also festival. Even though sound_play assures that it can handle multiple play request simultaneously, I had difficulty that caused a problem when trying to handle multiple requests within very short interval (ticket opened).

One workaround worth trying is to use festival (or other native player) directly. For example for text2speech, do something like this.

process = subprocess.Popen(['festival', '--tts'],
                           stdin=subprocess.PIPE,
                           stdout=subprocess.PIPE,
                           stderr=subprocess.STDOUT)
stdout_value, stderr_value = process.communicate(spokenTxt)
process.wait()

For playing audio file, using mplayer is an option if you're on Ubuntu. These worked out for us well (although certain interval b/w each play was necessary to guarantee the proper execution and the sound quality).

Hey all,

I have a subscriber written in Python and subscribes to some sensor msgs. It uses sound_play to perform speech synthesis and inform the user about the information received by the sensors. My main problem is that the latency is huge. The sensor detects the obstacle at time t and sends it to the subscriber. However, sound_play reporoduces the sound at time t + long_after. Apparently my subscriber sends too much messages to sound_play which accumulates the messages in a buffer. Is there any way to workaround this issue?

Thanks George

Hey,

I am using sound_play to perform speech synthesis for my robot. I am using Jabra Wave which is a headset connected via Bluetooth on the robot's computer. The device is paired and I can even play sounds on the computer and listen to them via Jabra. However, when I use sound_play to play a sound it doesn't come out from Jabra but instead from the computer's speakers.

Note that I have redirected the audio output to Jabra.

Any suggestions?

Thanks

Hey,

Does anybody know what this error means? I get it from sound_play node when I run a script of mine. My script works alright!

The error: Exception in cleanupdict for sound

This error can occur when you have cyclical dependencies. Does your package depend on a package that also depends on your package? Sorry for the confusing wording, but I don't know of a better way to say it.

EDIT

Here's an example of a cyclical dependency:

Package A is called my_robot_config. Package B is called my_robot_sensors.

In the manifest.xml files:

my_robot_config

<depend package="my_robot_sensors" />

my_robot_sensors

<depend package="my_robot_config" />

All you have to do is look through the manifest.xml files in your packages to make sure that two packages don't depend on one another.

Hey,

I created a new package and try to run rosmake...However, each time I do that this error appears and dunno why!

The error: RuntimeError: maximum recursion depth exceeded in cmp

Thanks George

Hey,

I want to use Novint Falcon with ROS but I have difficulties installing the rosfalcon package. It depends on libnifalcon and every time I try 'rosdep install rosfalcon' it fails complaining that libnifalcon could not be installed. I have searched all over the internet for the solution but nothing. I have also downloaded the sources from github and tried to inspect what's causing the problem bt with no success.

Here's the output from rosdep install rosfalcon:

E: Unable to locate package cd
E: Unable to locate package fi
E: Unable to locate package if
E: Unable to locate package !
E: Unable to locate package mkdir
E: Unable to locate package /usr/local/lib
E: Unable to locate package /home/george/ros
E: Package 'build' has no installation candidate
E: Unable to locate package libnifalcon-1.0.1.tar.gz
E: Couldn't find any package by regex 'libnifalcon-1.0.1.tar.gz'
/tmp/tmp4HUbU1: line 3: -p: command not found
successfully installed libnifalcon
/tmp/tmp4HUbU1: line 3: ]: command not found
rosdep libnifalcon failed check-presence-script after installation
rosdep install ERROR:
failed to install libnifalcon