audioengr

Responses from audioengr

USB cable..what do you have.
Axis is my personal favorite.Steve N.Empirical Audio 
USB cable..what do you have.
"transport and interconnect jitter will be out of the picture in the async USB case. Where am I wrong?"You are not wrong. I have done several async designs, some even with FIFO reclockers isolating the USB and the output. There are still cable eff... 
Will a quality USB cable make a difference....
"I'm pretty certain he was the first though!"I believe Ploytec and other Pro Audio designers had async designs out first, resulting in products from EMU and Tascam. I interfaced these to my Pace-Car.Steve N.Empirical Audio 
digital room correction
"I disagree with EQ being more important than room treatments."That's not what I said, I said "Room Correction", not room treatments. Room correction is generally DSP software that tries to eliminate room and speaker anomalies by changing the sign... 
digital room correction
I also agree with Bryan. Find the sweetspot for the speakers, and the correct toe-in first. You should have some basic room treatments, including side-wall reflection absorbers. Use a hand-mirror on the sidewalls to determine where to put them. 4"... 
Will a quality USB cable make a difference....
"I agree with you about timing variations. There's also latency, packet loss/corruption, and a host of other issues that can affect USB (or any almost any other data connectivity protocol)"No, I think you missed the point. Its the cycle-to-cycle t... 
Will a quality USB cable make a difference....
"Sorry, but it's just not possible. Keeping it simple, USB is a digital data transport bus, not an analog port. All it moves in the data path is 0s and 1s."I'm afraid that this is a tired argument. I've read the same argumant dozens of times on th... 
Will a quality USB cable make a difference....
"Assuming that you have already USB DAC with async USB protocol - do you need special (async?) protocol for the sender i.e. your USB 2.0 computer port ?"The computer device driver takes care of this, either native or custom device driver, and the ... 
Will a quality USB cable make a difference....
"Hello Steve: Do you mean USB 1.1 versus USB 2.0 or something different."Certainly async USB protocol using USB 2.0 is better than adaptive mode, but this is not what I'm referring to.I'm talking about circuit design, implementation and oscillator... 
Will a quality USB cable make a difference....
This is like asking "will a different S/PDIF cable make a difference"Like with all audio gear, the answer is: It depends.It depends on the USB interface you are using.It depends on the rest of your system - is it resolving and low-noise enough to ... 
PC Audio via S/PDIF question
Your conclusion is correct. I have found that even the best internal sound cards are not as good as an external USB converter or USB DAC with its own power source and low-jitter clock, particularly the ones using async USB protocol. Battery power ... 
USB - SPDIF on Eastern Electric DAC
USB converters/interfaces all use different drivers and firmware. Some have higher latency than others. Your computer must have a fast-responding I/O system in order to avoid drop-outs with some of these. I have personally had great results with T... 
Does this dac exist?
"Steve - Did you mean to say "asynchronous" USB here, or are you recommending adaptive USB?"I meant to say Async, not adaptive. I have abandoned Adaptive, closeout items only. Async is more expensive and requires 2 clocks to support all sample-rat... 
Does this dac exist?
I2S is not an external standard primarily because most manufacturers that have added it (about 10) implement it differently, and usually poorly. The designers simply dont understand transmission-line effects and termination techniques. S/PDIF stan... 
Does this dac exist?
"1. Can the EA Overdrive dac be controlled with Amarra or Pure Music when using the async USB input?"Yes."2. Does the Overdrive require drivers with a Mac, or is it like the Pace Car in that you plug it in and it automatically shows up in Preferen...