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In the device manager page, we located a driver under 'Other Devices' that had a yellow caution mark on it, and this allegedly missing driver is called Intel High Definition DSP When checking properties you can see the error code 28, which some googling explained is a missing driver. I am showing how to fix problems solution audio sound in Windows 10. This tutorial sound fix problems solution method solve it -.

While it’s been around for decades, the audio industry is starting to adopt DSP as the next big feature in audio products. The Apple AirPods Pro, Sony’s 360 Reality Audio, and even the Amazon Echo speakers are all starting to add DSP to their hardware, so just what is it? And on top of that, what is it going to change about the consumer audio experience?

What is DSP?

DSP stands for digital signal processor, which sounds pretty self-explanatory. The technology is found inside headphones, smartphones, smart speakers, studio audio gear, vehicle entertainment systems and much more. It’s actually a cornerstone of modern audio products.

You’re probably familiar with the idea of a processor from a computer’s CPU, which are designed as multi-purpose processors. A DSP is a processor dedicated to number crunching digital signals like audio. They’re designed to perform mathematical functions like addition and subtraction at high speed with minimal energy consumption.

If a device is processing audio, it's nearly guaranteed to have a built-in DSP.

DSP chips appear at a variety of sizes, prices, and performance points. Scaling up to multi-channel processors in cars and professional studio equipment, down to tiny low power chips for smart speaker voice recognition. They’re used to speed up the execution of audio-related algorithms while consuming less power than a typical CPU.

For example, there’s a DSP inside your smartphone to decode MP3 files, boost the bass of your music, run the math for active noise cancellation, and recognize your voice when you say “Hey, Google!”. DSP units are also found inside wireless headphones to convert Bluetooth codecs back into analog signals, and in-home cinema speakers to decode data streams into a surround sound experience. If it’s processing audio, there’s almost certainly a DSP in it.

How DSP will change your music listening forever

DSPs matter because they’re an essential part of modern audio equipment, from headphones to DACs, automotive speakers, and professional equipment. A high-quality DSP will give you processing power for high-quality effects ranging from on-device EQs to voice recognition, active noise cancelation, and surround sound capabilities. Premium DSPs also require very little power, prolonging the battery life of your devices for longer listening.

However, DSP capabilities aren’t something you’ll find on many if any spec sheets. With headphones, DSPs are bundled in with the Bluetooth chip’s capabilities, while other devices often provide ADC, DAC, and speaker driving capabilities, along with the DSP, on a single chip. Instead of looking out for processing specs, DSP capabilities manifest in other product capabilities, like those mentioned above.

Apple’s AirPods Pro use DSP to adjust the performance of the earbuds to fit your ear.

For example, the Apple AirPods Pro use a form of DSP to measure your ear canal, then adjust the performance of the earbuds to optimize the audio quality. Additionally, Sony’s 360 Reality Audio needs to map your ear and adjust its signal to achieve its magic.

Even hardcore audiophile nerds like our staff use after-market DSP boxes to do things like correct performance for bookshelf speakers, headphones, and even calibrate virtual surround sound systems included in products like the Sennheiser Ambeo Soundbar. By using a DSP unit with an appropriate microphone, you can measure the output of your audio gear in any environment, and correct the output to sound the way you want it to automatically.

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Essentially, by using a modern DSP, you no longer need to hope that your audio gear will sound good, you can force it to at any time by having the electronics compensate for shortcomings on the fly. This is a big departure from the past, as the use of DSP boxes used to be the domain of only the hobbyist or obsessive. Not anymore.

How does a DSP differ from a CPU?

This is the technical bit, so buckle up. To quickly cover the basics, any processor is built on a few core principles. Namely: decoders that convert code into operations that tell the processor what to do, registers and memory for storing operations and data, and execution units for crunching math and moving data around. This is what is known as the processor’s architecture.

By using a modern DSP, you no longer need to hope that your audio gear will sound good, you can force it to at any time by having the electronics compensate for shortcomings

The key bit to understand is that you can build an execution unit to run one or several of the wide range of mathematical operations out there. It’s a matter of the desired use case and power budget as to what you’ll build these units to do. Simply packing in every possible option would be hugely wasteful in terms of size and power consumption. General CPUs include execution units for basic things like addition, subtraction, multiplication, and division, but won’t accelerate rarer, more complex operations in hardware.

In a nutshell, a DSP is optimized for the most common tasks used in digital signal processing workloads. The list includes floating-point mathematics, the modulo operation, saturating arithmetic, multiply-accumulate (MAC) and fused multiply-add (FMA) operations. These functions are often required in filter, Fourier transform, codec encoding, and other DSP algorithms. Digital signal processors are typically built to run a number of these operations in parallel (a superscalar architecture) for much faster processing with lower clock speeds than a typical CPU.

developer.Qualcomm Inside smartphones, you’ll find CPU, DSP, and GPU components sat side by side, each used for specific tasks. The DSP handles the audio, such as decompressing music or activating your voice assistant.

DSPs also use highly optimized memory systems. Because audio samples are time-dependent they are fed in and out of the DSP using looped or first-in-first-out (FIFO) buffers. DSP memory architectures are optimized for this highly ordered data stream, unlike CPUs which use remappable blocks of memory where the specific location of a register is often less important. In this sense, DSP architectures are an ordered pipeline while CPUs often run much more out-of-order. As such, DSPs also rely heavily on Direct Memory Access (DMA), which moves data in and out of buffers at regular intervals without consuming processing time. You won’t find this used in general-purpose CPUs very often either.

Overall, DSPs are optimized in two key areas compared to general-purpose CPUs. They accelerate common DSP mathematical operations in hardware and boast specific memory architectures designed for real-time data streams. The net result is faster and more efficient processing of audio and some other data types.

Why you should pay attention

In 2020, many more high-profile companies are starting to embrace the transformative power of a properly-used DSP. From accurately making 3D audio, to automatically optimizing music, to enabling the next generation of Bluetooth audio codecs, the increased amount of development in the DSP field is going to change how we listen in very stark ways.

While it may be a slow burn, and it’ll take a couple years for most people to see these improvements, there’s never been a more exciting time to see where personal audio will go.

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