Question about Olympus Camedia D-520 Zoom Digital Camera

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Compression rates

What are the compression rates for the various record modes on the D-520 Zoom?

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Record Mode Recording Size (Resolution) Compression SHQ 1600 x 1200 Approx. 1/2.8 HQ 1600 x 1200 Approx. 1/8 SQ1 1024 x 768 Approx. 1/6 SQ2 640 x 480 Approx. 1/4

Posted on Aug 31, 2005

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My car is loseing compression when you press on the gas pedal


That doesn't mean it's losing compression. It can only possibly lose compression from internal wear or sticky valves or stretched timing chain or catastrophic failure - it can't lose compression one moment, then regain compression the next moment except in cases of sticky valves or stretched timing chain.

I doubt you have any of these issues, unless your car is pretty badly worn. What's happening is your car has lost most of its POWER, not compression.

At any rate... if it's a modern car, get the computer's error codes with an OBD (if pre-1987) or OBDII (1997 and later) scan tool. If no codes or engine older than about 1987, suspect poor or old gasoline, fuel pressure or flow rate, clogged air filter, weak coil, plugged exhaust, various ignition-related issues, park brake set, accelerator linkage, serious mechanical problems (wheel bearings, etc). This isn't a question that warrants a quick "silver bullet" answer, there are TONS of things that might cause you to lose the ability to accelerate.

Aug 10, 2014 | 2005 Dodge Stratus

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The sound I record plays really softly once I upload it to my computer...


you need to record louder by raising the input level or getting closer to the microphone. you can also raise the level afterwards using normalization, compression or gain adjustment.

Dec 20, 2009 | Zoom H4 Handy Recorder

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Overall volume when burned to disc is too low


This is a pretty common complaint and not unique to the 2488. The basic idea is that commercial CDs get their superior volume levels through the use of lots of compression which occurs throughout the mixing and mastering process. There are lots of schools of thought on how and when to apply compression during the production of recordings and the only real way to learn is to read up on compression and then to experiment.

Having said that, volume can also be increased by normalizing but many people don't consider that to be a completely legitimate way to increase dynamics and it does require working with wav files on a PC as opposed to the 2488.

I use a combination of external compressors, software applications, and the 2488 onboard compression effects when mixing/mastering (but mostly ouboard compressors). I usually don't burn CDs from the 2488 and choose to instead tweak the final mixes from the 2488 on my PC using various programs which gives me better control over various parameters (such as applying normalization to all tracks at once).

So the short answer is that there a lots of different ways to get there but basically when the dynamic range or your recorded material is large, the main volume of a track is going to sound lower because the parts with the highest levels (peaks) are going to need to fit in the -0 db area in order not to clip. When compression is applied the dynamic range is squashed down so that the peaks are brought more in line with the audio level which makes up the main portion of the track (in the middle of the dynamic range). This then allows the overall levels to be brought up higher without the peaks clipping. This is called downward compression.

Compressors can also be used to bring up the levels of low volume sounds without affecting the middle and higher level audio. This is called upward compression and also compresses the dynamic range in order to raise the volume of lower levels audio. This is called upward compression.

So when compressing and then boosting the main levels, the noise floor can come up with it. That is why gating is also commonly used along with compression and most outboard compressors are gates as well.

Hope this helps.

bd.

Nov 10, 2008 | Tascam 2488 Portastudio Multitrack...

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DVD copying


There are double layer DVD's that they make which usually have about 2x the memory. check to see if your DVD recorder supports these types of DVD's. You could also just divide your media on to two sides of a double sided DVD (each side has the mirror look and you can record onto both sides)(still the same disc) or you could record on to multiple DVD's (may be inconvenient but is still an option). Also, you could reduce the recording quality just a bit so that it is not noticable when you watch it but it still uses less space on the disk. I would tell you how to do these things but I have no experience with the individual model that you have.

Mar 22, 2008 | Panasonic DMR-EZ47V DVD Recorder/VCR

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What is Variable Bit Rate recording?


Variable Bit Rate recording is activated in the Extra Fine filming mode and solely with the use of DVD-RAM discs. In this mode, the incoming video data is analyzed and the bit rate is dynamically adjusted to optimize the compression of any given sequence. The benefits are higher quality videos and reduced file sizes, which results in efficient use of the amount of available disc space.

Sep 05, 2005 | Hitachi DZ-GX20A DVD Camcorder

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Features of each record mode


The details for each record mode are as follows: RAW: RAW data is unprocessed image data in its original state to which white balance, sharpness, contrast, color conversion and other processes have not been applied. CAMEDIA Master can be used to display RAW data and save it in other image formats. A RAW plug-in is also available for Adobe Photoshop which also provides the ability to process images in 32-bit color depth. TIFF: This is the highest-quality mode. images are saved as uncompressed data, which is the best for printing or image processing on a computer. SHQ: This is a high quality mode using the JPEG format. Because the compression rate is very low, high quality images can be stored. HQ: This is a high quality mode using JPEG format, with medium compression. Because the compression rate is higher than SHQ, file sizes are smaller. More images can be saved to a card. The file size can be changed in the 3:2 or Enlarge size mode as well as SHQ. 3:2 Mode: Ordinarily the image aspect ratio is set to 4:3. Due to change the ratio to 3:2, the picture size becomes 2592 x 1728 so that the image can be printed without losing the image borders at a photo lab. 3:2 can be set in the TIFF, SHQ, or HQ mode. SQ1/SQ2: SQ1 is used for resolutions above 1600 x1200 and SQ2 is used for resolutions below 1600 x1200. For both, you can choose high compression to reduce noise or normal compression to save more images.

Sep 04, 2005 | Olympus Camedia C-8080 Wide Zoom Digital...

1 Answer

Features of each record mode...


The details for each record mode are as follows: RAW: RAW data is unprocessed image data in its original state to which white balance, sharpness, contrast, color conversion and other processes have not been applied. CAMEDIA Master can be used to display RAW data and save it in other image formats. A RAW plug-in is also available for Adobe Photoshop which also provides the ability to process images in 32-bit color depth. TIFF: This is the highest-quality mode. images are saved as uncompressed data, which is the best for printing or image processing on a computer. SHQ: This is a high quality mode using the JPEG format. Because the compression rate is very low, high quality images can be stored. HQ: This is a high quality mode using JPEG format, with medium compression. Because the compression rate is higher than SHQ, file sizes are smaller. More images can be saved to a card. The file size can be changed in the 3:2 or Enlarge size mode as well as SHQ. 3:2 Mode: Ordinarily the image aspect ratio is set to 4:3. Due to change the ratio to 3:2, the picture size becomes 2592 x 1728 so that the image can be printed without losing the image borders at a photo lab. 3:2 can be set in the TIFF, SHQ, or HQ mode. SQ1: SQ1 uses the highest compression for resolutions greater than 1600 x 1200. You can choose high compression to reduce noise or normal compression to save more images. SQ2: SQ2 uses the highest compression for resolutions less than 1600 x 1200. You can choose high compression to reduce noise or normal compression to save more images.

Sep 04, 2005 | Olympus Camedia C-5060 Wide Zoom Digital...

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Storage path


On removable memory cards. Panasonic iPalm Digital Cameras are equipped with an SD Card Slot which allows the camera to store images on EITHER an MultiMediaCard (MMC) or an SD Memory Card. Simply insert an MMC or SD Card into the camera, take pictures until the card is full, then remove it or replace it with a fresh card. You can selectively erase any or all of the images from the either the MultiMediaCard or the SD Memory Card and reuse it. Storage capacity for the PV-DC3000-A (based on included 16MB SD Memory Card) SuperFine Mode* (2048x1536/low compression) up to 13 images Fine Mode (2048x1536) up to 27 images Normal/2x Digital Zoom Modes (1024x768) up to 69 images Burst Recording Mode (1024x768) up to 82 images 3x Digital Zoom Mode (640x480) up to 150 images Motion Image Recording Mode (12 sec. max./320x240) 9 sets TIFF Mode (2048x1536/no compression) 1 image Storage capacity for the PV-DC3010 (based on included 32MB SD Memory Card) SuperFine Mode* (2048x1536/low compression) up to 29 images Fine Mode (2048x1536) up to 57 images Normal/2x Digital Zoom Modes (1024x768) up to 145 images Burst Recording Mode (1024x768) up to 172 images 3x Digital Zoom Mode (640x480) up to 315 images Motion Image Recording Mode (12 sec. max./320x240) 19 sets TIFF Mode (2048x1536/no compression) 3 images

Aug 31, 2005 | Panasonic iPalm PV-DC3010 Digital Camera

1 Answer

Storage path


On removable memory cards. Panasonic iPalm Digital Cameras are equipped with an SD Card Slot which allows the camera to store images on EITHER an MultiMediaCard (MMC) or an SD Memory Card. Simply insert an MMC or SD Card into the camera, take pictures until the card is full, then remove it or replace it with a fresh card. You can selectively erase any or all of the images from the either the MultiMediaCard or the SD Memory Card and reuse it. Storage capacity for the PV-DC3000-A (based on included 16MB SD Memory Card) SuperFine Mode* (2048x1536/low compression) up to 13 images Fine Mode (2048x1536) up to 27 images Normal/2x Digital Zoom Modes (1024x768) up to 69 images Burst Recording Mode (1024x768) up to 82 images 3x Digital Zoom Mode (640x480) up to 150 images Motion Image Recording Mode (12 sec. max./320x240) 9 sets TIFF Mode (2048x1536/no compression) 1 image Storage capacity for the PV-DC3010 (based on included 32MB SD Memory Card) SuperFine Mode* (2048x1536/low compression) up to 29 images Fine Mode (2048x1536) up to 57 images Normal/2x Digital Zoom Modes (1024x768) up to 145 images Burst Recording Mode (1024x768) up to 172 images 3x Digital Zoom Mode (640x480) up to 315 images Motion Image Recording Mode (12 sec. max./320x240) 19 sets TIFF Mode (2048x1536/no compression) 3 images

Aug 31, 2005 | Panasonic iPalm PV-DC3000 Digital Camera

1 Answer

File sizes


Record Mode Recording Size (Resolution) Max. File Sizes SHQ 1600 x 1200 Approx. 1.3MB HQ 1600 x 1200 Approx. 418KB SQ1 1024 x 768 Approx. 213KB SQ2 640 x 480 Approx. 140KB

Aug 31, 2005 | Olympus Camedia D-520 Zoom Digital Camera

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