The “Exclusive Mode” boxes in Windows Sound don’t mention WASAPI. If the project rate is below twice the frequency of the sound to be listened to, playback won’t be able to reproduce any of that sound (at standard playback speed). This is independent of the project rate, which controls the sample rate of playback and the sample rate at which tracks are mixed or exported. The maximum frequency that you can display in the spectrogram is half the sample rate shown in the track’s information area. (I am assuming the apps they are referring to is WASAPI?). There are 2 boxes to check here, both of which are already checked, Allow apps to take exclusive control of this device and, Give exclusive mode applications priority. When I look at the Exclusive Mode box there is no mention of Windows WASAPI. If you could give me any information on this I would be very grateful. My understanding is that the file that is shown, is limited to the SR the software is set at? So and calls over 96000 can not be shown/played back? The SR within the bat detector that we made the recordings with was set at 384000. However, I am a little confused with this and how the SR is running at 192000 as when I playback calls, there are clearly parts of the call that are over 96000 that are being displayed on the spectrogram. So, by doing this we are able to playback the calls successfully. The majority of bat calls we are looking at are under 96kHz. But if I change the SR rate down to 192000 on the 2 computers I was struggling to get to playback, it works fine. Playback works fine at this SR on the newer laptop that I originally have been using with Audacity. This is set within the drop down menu in the bottom left of the display. I am using a Project sample rate of 384000 (we are looking for bats with calls going upto 145 kHz). Plus updating the driver on the personal computer doesn’t seem to have solved the issue. I haven’t attempted to update this on the laptop, as it is a volunteers laptop, so do not want to change anything unless totally necessary. I managed to update the driver for the personal computer without any issues (that I am aware of). They are both older computers that have been updated with Windows 10. I am using Audacity 2.1.2 on both computers. Sorry, long explanation but wanted you to know I have been looking at different options to fix this. If I click on the Change setting button it just take me back to the High Definition Audio Device Properties pop up box. When I double click on them and look in properties it is telling me that the device is working properly but it is just a High Definition Audio Device from Microsoft, not RealTek, as it is on the laptop that is working correctly, but I cannot see any way to change this. When I look in Recording devices the recording devices do not seem to be not active (a red downwards facing arrow as opposed to a green tick on the laptop I have that is working properly). If I change this it doesn’t appear to make any difference. By right clicking on the speaker on the right of the quick launch tool bar at the bottom of windows and clicking on sounds, I then double click on the headphones that are highlighted green and go into Advances in Default format it gives me the option to change the SR and bit depth, but I am not sure what this is for exactly. When I reduce the SR in the bottom left hand corner of Audacity to 109200 it will start to play the file but then stop a fraction of a second in. When I look in Device Manager in Audio Inputs and Outputs, it tells me the Realtek High Definition Audio :This device is working properly. I have tried the earphones in both jacks and there is still the same problem. I always import and export the files as I need to change the name of the file to contain the bat species that is present within the file. But I didn’t think these would be required when only playing back calls. However I can not see any options to choose anything in Recording device and recording channels. So I have updated this and now I can see MME in Audio host and Microphone (RealTek High definition) in Playback Device (speakers). I checked out the RealTek sound card and it hadn’t been updated since 2010. Please check the playback device settings and the project sample rate. When I go to play a file using the play at speed button, (with playback speed at 0.16) I get the following pop up:Įrror while processing sound device. I have now downloaded Audacity on a computer and another laptop. I have been using Audacity on a laptop and have not had any problems with playback. I am using Audacity to look at Bat acoustic WAV files (upto 6MB), so very high frequency, short files.
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