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Part 1 DIY Digital Audio Player (DAP) Project No.2473

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Part 1
Lately I've been struggling with finding a suitable digital player for music playback. I thought I would share my experiences so far and provide an update on where I'm at with developing a replacement digital audio player (DAP).
Part 2
I conduct distortion measurements on my DAP to see if the Ian Canada #20B Digi-Transport with NC-Pure clock provides lower distortion than simply USB out from the Raspberry Pi.
Part 1 Blog Post:josephcrowe.com/blogs/electro...
Part 2 Blog Post: josephcrowe.com/blogs/electro...
Speaker Blog: josephcrowe.com/blogs/news
Contact Page: josephcrowe.com/pages/shop-in...
Intagram: / joseph_crowe_diy
Pinterest: www.pinterest.ca/crowe2065/jo...
Email: joseph_crowe@josephcrowe.com
Joseph Crowe Custom Audio Products is a small business located in Canada. Owned by Troy J. Crowe, he offers custom audio products such as wood horns, crossovers, design and testing, or complete speaker builds. He provides services to either individuals, small businesses, or start-ups. All of his designs are available for personal use in the form of 3D CAD files or Drawings. Please contact for commercial licensing. Troy J. Crowe has a background in Mechanical Engineering Technology with extensive experience in both the Audio Industry and the Automotive Industry. He does all his own design work and CNC machining. His focus is on audiophile two-channel music systems for the most accurate sound reproduction.

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2 июн 2024

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Комментарии : 10

@rhalfik 2 месяца назад

Joseph Crowe: picking new curtains. Joseph's spouse: Part 1 New DIY bedroom curtains (NDBC) Project No.2502

@everardwilliams2918 23 дня назад

Hey Joseph, does this mean that you are no longer using SD cards for your playback? did you ever try different varients of SD cards like SLC's?

@davidkclayton 2 месяца назад

This is my setup and it works great. $30 InnoMaker Raspberry Pi HiFi DAC HAT PCM5122 HiFi DAC Audio Card Expansion Board for Raspberry Pi 5 4 3 B+ Pi Zero etc. (DAC HAT). $46 New Raspberry Pi 3 Model B+ Board (3B+) Raspberry PI 3B+ (1GB) (3B Plus). $0 installed Volumio. Powered by 2A USB phone charger adaptor. I connect to my local area network via WiFi And stream from NAS (Qnap).

@bkims 2 месяца назад

I'm not sure I'm understanding the rationale behind avoiding ethernet (wifi or wired) for data transmission. TCP and ethernet are not lossy, they kinda have to be bit perfect in fact. Is your network streaming source transcoding your audio stream into a more lossy format? Also, It seems like it might be more ideal to go optical to fully de-couple the device ground planes.

@JosephCrowesDIYSpeakerBuilding 2 месяца назад

I’m just basing it on subjective listening over the seven years of owning the Poly. I don’t have an explanation for you other than to say Wi-Fi introduces electromagnetic radiation physically very close to audio signal components.

@bkims 2 месяца назад

Hmm. it would be curious to get your impressions on how your new setup handles it given the RPi5 and audio hat have a totally different hardware topology. Though id also wonder about the bluetooth radio as well since IIRC they both transmit in the 20-100mw power range and are both around 2.4ghz (excluding 5ghz obviously).

@sc0or 2 месяца назад

The first thing is that Pi is overpriced. However this is a minor issue. The bigger issue is that Broadcom SoC does not allow to feed an external master clock to its I2S subsystem. As a max it accepts LRCK that is not the same thing. On the other hand, USB on Pi board is quite noisy. In this case, a hosting board with Pi computing module seems to be a better solution for music (if an external USB DAC is supposed)

@thinkIndependent2024 2 месяца назад

Your observation is correct, Just use a fanless mini PC and power through a Mosfet DC to DC converter it will provide lower noise than a "Universal Filament Regulator" and cost around $15.00 usd

@sc0or 2 месяца назад

@@thinkIndependent2024 Ian Canada offers a super capacitor based PSUs for a Pi and GPIO sound cards. And it's not too expensive. Yet more thing can be made is an async-to-sync re-clocker powered from a battery or a super-cap, or low noise LDO after a non-switching PSU, but it needs a special Linux driver that appears as a block device, not a stream one.

@thinkIndependent2024 2 месяца назад

@@sc0or Super Capacitors equal a tremendous amount of work , One just use a DC to DC con convert with AGM batteries and achieves faster build and zero soldering . I will send a very simple build to Gabster next week I'm sure he will post it I'm an engineer but have no time to create videos