Question about Denpa mp-36 128MB Handheld Digital Voice Recorder

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Cannot play .HGL files once files have been downloaded to my computer

I have a Denpa MP-36 128. I have used the USB to download audio files I have recorded of phone calls to my computer. The files are listed as .HGL and I cannot find out how to play them on my computer.

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Re: Cannot play .HGL files once files have been...

Unless you have specific software to play the .hgl files (you could do an internet search for "hgl player"+"audio" to try and find a standalone .hgl player if you want to try this route) then you'll need the program Converter 1.4 that comes on the CD shipped with the product. This software is a program that decodes the compressed recording file (the .hgl) and converts it into a .wav file that can be played using most any PC media player; from there, you can listen to it or recode it as an .mp3 or whatever you want to do with it.
Hope that helps.

Posted on Dec 12, 2007

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Instruction manual for Denpa MP38

You might try I believe that is the company that actually manufactures the Denpa Digital Recorder.

Oct 09, 2008 | Denpa USB-24 Digital Voice Recorder


DENPA MP38FM problem affter upgrade


I have
DENPA MP38FM 1G kit with external FM mic.
Problem is affter upgrade software from cd which was in the kit, now I lost some icone on the LCD screen. Looks like big screen but small LCD. Need Help with right upgrade software.

Thank you

on Apr 04, 2008 | Denpa mp-36 128MB Handheld Digital Voice...

1 Answer

Denpa mp38 digital recorder

The internal memory is the place where the recording itself would have been stored, so unfortunately there is no "extra" memory to cover mistakes such as this...that would be like every PC being shipped with two hard drives in case you deleted something!
However, all may not be lost. The most important thing is DO NOT MAKE ANY FURTHER RECORDINGS OR FORMAT THE UNIT till you have definitively ascertained that the recording is indeed irretrievable.
RECOMMENDED: Trawl the Web for a program called "SoftPerfect File Recovery," download it, and install it (it's a tiny program, about 250kb) - I know you can find it at
Read the help file and follow the instructions...with luck, you should be able to get your recording back.
FYI when you "delete" a file you do not erase it from the storage disk; all that happens is the first letter of the file name changes in the file structure, so the data can no longer be accessed as the device doesn't know where to look. So long as the data hasn't been overwritten by further recording or reformatting, invariably it can be retrieved...this is how the FBI catch all those nasty kiddie porn people out who think they've 'cleaned' their hard drives simply be hitting the delete key.
Hope this helps. If it doesn't then do a google search for 'data recovery software' and try another program. There are many (good) free ones out there, although most are designed to recover deleted photos from media cards. Good luck.
p.s. Would appreciate it if anyone can tell me how to turn on the backlight on my denpa mp-36 unit. I've read the manual and can't find it anywhere. I guess I'm missing that elusive button combination...

Nov 14, 2007 | Denpa USB-24 Digital Voice Recorder

3 Answers


Hi Guys,
I have the same corrupted file, but you can recover it by using the GoldWave software. Just type"Goldwave" in google, follow the link and download the software, install it. From that software open the corrupted file, and then save it as a new copy. ( It will fix the problem when opening the file, where you can see it). They try to play the new saved file, shld be fine.
all the best.

Oct 30, 2007 | Denpa USB-24 Digital Voice Recorder

1 Answer

Transfer datas from Denpa to computer

Might be able to help you out but need some more information...
1. What type of PC (IBM/Mac) do you have?
2. What OS (Windows 95/98/NT/ME/XP/Vista/Leopard/Linux etc.) are you operating on?
3. Do you have CD that shipped with unit and USB cable?
4. Does your computer 'see' the unit as a removable drive when connected?
5. What model Denpa is it?
I'll check back in a few days to see if you're still looking for a solution - have you successfully transferred files before?

Oct 10, 2007 | Denpa USB-24 Digital Voice Recorder

3 Answers

Denpa USB - 24 DVR

Give me an ftp address and I'll upload the software. I have the same voice recorder.

Sep 14, 2007 | Denpa USB-24 Digital Voice Recorder

2 Answers

Harbinger Decoder

Okay, I'll try and help you out...
1. Create new folder on desktop called 'recordings' or something similar i.e. easy to remember!
2. Connect unit to PC via USB cable and turn on the unit. If you slide the HOLD switch to the on position, you should get a message saying "PC LINK" on the display.
3. Locate the recording(s) that you want to decode. I don't know what model of denpa you have, so I can't be sure, but there are normally four folders (A, B, C, and D - there may also be an MP3 folder). The recordings are accessed by double-clicking my computer, then the removable disk icon that appeared when you plugged in and turned on, and then opening the folders that are present which contain the recording(s) you wish to decode.
4. Identify the recording(s) you wish to decode and copy them to your newly created desktop folder (right click the file/copy and then go into new folder and paste there).
5. Once you have copied the file(s) you want to decode, open the Converter program (programs - harbinger converter - converter 1.4).
6. In the program window click on the magnifying glass in the top box (source file) and browse to your new folder.
7. Select the file you wish to decode (I think you have to do them one at a time - just repeat the process for each one following these steps).
8. In the lower box (output file) enter the name you wish to use to identify the file so you can find it. Then click on the magnifying glass for the output file and browse to your newly created folder (this will then be where your converted files will be sent on decoding).
9. Click the 'decode' button in the lower left corner of the program window (I think it shows a picture of two different sized cogs side by side).
10. The file should then be decoded from its .hgl format to a (new) .wav format with whatever name you gave it. From here, you should be able to listen to the file on your PC using any common media player (i.e. Winamp/Media Player etc.) or recode it as an .mp3 if you want to save some hard disk space on your computer.
Repeat the process from step 6 for each file you want to decode.
Hope that helps and good luck.

Jun 21, 2007 | Denpa USB-24 Digital Voice Recorder

2 Answers


Without knowing the type of usb connector you need, go to this site there must be something you can use.

Apr 22, 2007 | Denpa USB-24 Digital Voice Recorder

1 Answer

Denpa drivers required for online download

Depends what OS you are using. If you are using Windows ME/2000/XP/Vista then you do not need drivers for device to be recognized by PC when it is connected via USB cable (operating system will automatically work out what drivers are needed and configure so that the PC 'sees' the device - once seen it will show up in my computer as 'removable disk' icon).
If you are using Win98 then you need to install the driver. I haven't found anywhere on the Web where the files are located but they may be on the Windows 98 CD itself (they are identified as HB_UDISK_DRIVERS).
For example, from the installation CD the full path would be:
D:\HB_UDI~1\WIN98\HB__UDISC.INF where the CD-ROM drive is called the D drive (depends on hard disk configuration).
There is another question on here where someone has posted a link to a site to download software...not sure if the device driver files are available there. Note that the drivers merely enable your PC to recognize the device - the won't be any use in encoding/decoding/editing the files; that's done by separate software programs.
Good luck. Repost if you're having no joy...I may be able to dig out my installation CD and burn/mail you a copy. I'll check back in a week or so.

Nov 10, 2006 | Denpa USB-24 Digital Voice Recorder

2 Answers

Can't erase

I think I know your problem, but if it doesn't work I'm sorry. I'm not the best when it comes to technology. Don't play it while you're erasing and hold down the erase button 'til you here a beep. I hope this works.

Sep 05, 2006 | Denpa USB-24 Digital Voice Recorder

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