aflint
Location: United Kingdom
Posts: 4
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 Posted - Sat Aug 02, 2003 5:49 pm |
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Hi,
Today I purchased a Plantronics DSP-300 PC Headset. A few techie details before I explain my problem. It has a USB port connector, The spec is:
Mic Input:
Mono, 16 bit, 48kHz data
Mic gain stage >50dB Range
Up to 25 dB noise rejection
(hyperdardoid response)
100Hz-10kHz frequency response
Electret condenser microphone with -38dBV/Pa sensitivity
Digital Signal Processing:
5 channel 16-bit, 48kHz data from USB
24 bit, 100dB signal-to-noise CODEC
32 bit digital audio processing
Headphone Output:
2 channel 48kHz output to headphone
Headphone gain stage >80dB range
Preset digital EQ-6 bands/channel (stereo)
Bass, treble, balance, and volume controls
60Hz-16kHz speaker frequency response
28mm speaker diameter
Now having written all that, I don't understand a word of it, but I thought it might help those a thousand times more knowledgable than me to identify my problem, and perhaps be able to suggest a solution.
My PC is a Compaq Presario with a RealTec AC/97 Audio Device (I guess that means Soundcard). I record voice sound files for uploading to the internet, church sermons actually, and recently I have first recorded the sermon using COOL EDIT, saved it as a .wav file, then converted it a .mp3 and then from the same .wav file I have converted it again to a RealAudio .rm file. This has worked well, and I have been highly delighted with how successful this method has been.
Now to my problem (if you have made it thus far, well done!), because I wanted to record narrations from books, I thought that a headset mic would be the thing to go for. Having installed the software that came with the headset I did a few test recordings, but when I saved my recording as an .mp3 file, using my usual sampling rate and other settings etc.. and then play it back I seem to have what sounds like a mirror recording in the background. It is not a buzz or anything like that but it is quite off-putting. The background sound is much lower volume, but it is there, I wouldn't quite describe it as an echo, but it is almost like I can hear myself twice.
The strange thing is that it seems worse when I play the file back through the headset, plus the added fact that I don't notice the same problem with the .wav or .rm files, only the .mp3.
Has anyone any idea what the reason might be, and is there a solution, other than chucking an expensive bit of kit in the dustbin?
If anyone can help I would be more than happy to hear from you.
Regards,
Alan
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Plantronics DSP Series Headset Mic - Help
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