Q: Is Samplify compression lossless?
A: Samplify can operate in Lossless, Fixed Rate or Fixed Quality Mode.
A: Samplify for Windows can compress or decompress signals at
10-15Msps on a 2G Pentium 4.
Q: Are Samplify FPGA and Samplify for Windows
compatible?
A: Yes signals can be compressed in an FPGA and decompressed using Samplify for
Windows and visa versa.
Q: How well does my signal compress?
A: Send us your signals and we will analyze them for you. All signals are kept
strictly confidential. We accept the following file formats:
Text Signed or Unsigned Decimal or Hex
Binary Signed or Unsigned 8-bit or 16-bit
Email
signals@samplify.com with a brief description of the signal and the attached
data file and we will analyze the results and send them to you.
E-mail
sales@samplify.com with a brief description of the signal to receive a free
30-day evaluation copy of Samplify for Windows.
A: Samplify is optimized to compress sampled data. In order to compress at
hundreds of Msamp/sec, Samplify reduces the common redundancies in sampled data
- sample-to-sample correlations, using just enough dynamic range to represent
the samples, and recognizing that a data converter's effective number of bits (ENOB)
is always less than its resolution. Samplify is designed to recognize these
common sources of redundancy, and then to remove them in real time.
Q:
Over what range of sample rates does Samplify operate?
A: Samplify operates from sample rates up to about 1 Msamp/sec (DSP object
libraries), 10 Msamp/sec (Pentiums and Power PCs), hundreds of Msamp/sec
(FPGAs), and Gsamp/sec (ASICs). If your system already includes a DSP chip,
microprocessor, or FPGA, chances are good that Samplify already has a real-time
compression solution for your platform or can quickly develop one for you.
Q:
Why aren’t high-speed signal processing systems already using compression?
A: High-speed signal processing systems are found in diverse applications -
medical imaging, test & measurement, IC test, radar and software radio…the list
is long, the signals are quite diverse, and the range of sample rates is broad.
Also, since the signals are varied and NOT of the type that have historically
been compressed (speech, audio, and video signals), most people think that these
other signals are too different to be compressed effectively with one algorithm.
Also, some users will need lossless compression, while others will want fixed
rate or fixed quality compression. In contrast, Samplify has discovered that
many of these signals are bandlimited, and that their dynamic range doesn't need
the data converter's full resolution all the time. Samplify simply offers a
useful set of lossless, fixed rate, and fixed quality compression algorithms
that work on many of these signals, with good compression ratios.