The receiver usually needs to have a Bluetooth Receiver, a DAC or digital to analog converter, and an amplifier to work.Ī higher quality signal requires a higher bandwidth, or more data to be transmitted, which requires more power, and Bluetooth was designed for lower power devices, which is why those codecs have been employed. The data transmitted is digital, which is why the source quality does not matter as long as the signal is steady and stable, and a digital player and a smartphone will sound the same when transmitting Bluetooth signals. The sound of Bluetooth is technically always compressed at the transmitter source and decompressed at the receiver point. Bluetooth codecs are software codecs or protocols that regulate data transmitted over the Bluetooth main protocol. While we don’t sell anything, you can always support Audiophile-Heaven by reading more articles, subscribing on youtube, sharing the review, donating, and having a great time.īluetooth – What exactly is Bluetooth and how does it workīluetooth is a broad name for a short-range wireless connection, used to transfer data between two devices, nowadays being the most popular for audio transmission, as it has been surpassed by Wifi for pure data transfer. I generally make reviews where I describe my experience with products, but the question of Bluetooth products has always been one I had to double check whenever I wrote a review, so today’s article will serve me too for when I need to check up while I write another review about a Bluetooth product. Audiophile-Heaven is your main source of independent information about audio, music and sound related tech. Today’s article is sponsored by us, Audiophile-Heaven, and me, George, the writer. If you want the official version, Bluetooth dates all the way back to 1989 though, when it was initiated by Ericsson Mobile, and it was designed for mobile headsets. Because of this, Bluetooth was aimed at a lower bandwidth so less data being transmitted than what music usually needs (1411 kbps to be more precise, for lossless CD quality), and Bluetooth devices have now evolved to surpass the limitations they had on latency and data limits to the point where even I saw myself recommending a bluetooth DAC AMP like the Dethonray SG1 Pegasus as if it was wired, or even above some other wired options. The sonic quality was atrocious at best, but that’s about how it all started, and Bluetooth as a standard for audio started mainly with communication and call headsets rather than audiophile products and dedicated pieces to enjoy music. It was a very old Plantronics bluetooth headset, but it worked, and sometimes you could even listen to music, and by sometimes I mean that only some phones were able to send music to it, but it was a rather fancy experience back then. Today’s article will also explore some misconceptions about Bluetooth and wireless in general, and I’ll try to help you better understand the complex subject of Bluetooth codecs and what’s the best one to use in every situation.īluetooth audio has been a big part of all of our lives now, and I remember this having started when I was just 9 years old and my father had a wireless communication headset for work. I had a very hard time finding proper information on how Bluetooth codecs work, what is the difference between them, what is the sonic difference between them and what bluetooth protocol / codec sounds best, and why you’d want to use any of them over the others. This is less of a review and more of a guide that I have been wanting to work on for a while now. The review will focus on which one has the lowest latency, what’s the best sounding Bluetooth codec, how to get the best sonic performance with bluetooth, and how everything connects together. Today we are looking at Bluetooth codecs, all of them, aptX, aptX Adaptive, LDAC, SBC, AAC, LHDC, aptX HD, Scalable, aptX LL, everything in between and how they work. Bluetooth Sound Quality Guide – What are the Codecs, and how do they work
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