You are here

“WICED” Good! How True Wireless Audio Quality is Music to your Ears | 赛普拉斯半导体

“WICED” Good! How True Wireless Audio Quality is Music to your Ears

Audio “quality” is traditionally a subjective topic. Some listeners may prefer deep bass to avoid the tinny sound that long plagued headphones, while others prefer a more balanced sound. As true wireless earbuds have emerged, one undisputed measurement of quality is rock-solid connectivity. The audio simply won’t sound good without a stable connection from the source (a phone, for example) and between the two separate earbuds.

The most common connectivity protocol used for wireless earbuds is Bluetooth®. The challenge is that consumers demand the smallest form-factor possible. While this is great from an aesthetics and comfort perspective, it also means there isn’t a lot of room to fit in all the technology that makes it work — including the antenna. Another major challenge of the small form-factor is battery life. If the battery only lasts a few hours, it results in a poor user-experience, and adoption will be low. To meet the bar for adoption, OEMs must overcome these technical challenges, while also differentiating their product from the competition.

Unfortunately for OEMs, there are a small number of chip sets that allow manufacturers to check these boxes, making it difficult to differentiate their products. That is where Cypress excels. Our CYW20721 with WICED® SDK provides dual-mode support for both Bluetooth Low Energy and Bluetooth classic — the two dominant protocols used for earbud connectivity. By having a dual-mode chip, manufacturers can also optimize space usage. Cypress radios have the lowest power consumption on the market, which means longer battery life.

To offer OEMs better differentiation options than a one-size-fits-all single chip integrated solution, Cypress offers a “good, better, best” range of options. All three options utilize the CYW20721 Bluetooth radio/MCU chip allowing the OEM to insert their DSP Audio Codec of choice to provide one level of differentiation. From there, additional functionality is added to the “better” and “best” options to further distinguish a high-end product from the low end. The “better” option adds an additional external microphone and a feature such as an accelerometer.

The “best” option, while higher priced, can allow OEMs to market their earbuds to replace multiple wearable products, making it easier for consumers to justify spending the extra money. This is done by adding the PSoC® 4 MCU as a touch and sensor hub. The PSoC 4 MCU allows features such as heart rate monitoring and a gyroscope — functions typically served by a smartwatch — to be added, while the existing CYW20721 chip provides the compute power to make sense of the data. The addition of flash storage within the “best” option allows music to be saved directly to the earbuds. This is especially useful for outdoor activities such as running or hiking, where a carrying another device like a phone or an MP3 player may not be ideal.

Regardless of which level an OEM chooses, when the product is combined with Cypress’ Wireless Audio Stereo Synchronization (WASS), it is music to your ears — literally. WASS provides a robust wireless connection between the two independent earbuds. This enhances the synchronization between the left and right earbuds so that the beats of the drum hit the right spot, and the vocals come through exactly when you expect them. It also boosts receive sensitivity so that there are no more annoying connectivity issues when your phone isn’t perfectly placed.

In addition to providing the best solution available, Cypress strives to offer its partners the easiest and fastest path to development. Cypress will make demo apps available to OEMs, so they can build and differentiate, while giving them the chassis that enables basic functionality such as making phone calls and pausing/playing/skipping music. It also provides voice recognition activation that will, for example, initiate an interaction with Apple’s Siri or Amazon Alexa.

Get in touch to learn more about our wireless audio solutions.

 

Blog: 

本网站上的所有内容和材料均“按原样”提供。赛普拉斯半导体公司及其各个供应商对这些材料用于任何用途的适用性不作陈述,并且对关于这些材料的所有担保和条件概不负责,包括但不限于有关适销性、针对特定用途之适用性、权利和不侵犯任何第三方知识产权的所有暗示担保和条件。赛普拉斯半导体公司不授予任何明示或暗示的许可(无论是以默许方式或是任何其他方式)。使用本网站上的信息可能需要第三方的许可,或赛普拉斯半导体公司的许可。

本网站上的内容可能包含或必须遵守关于使用的特定准则或限制。所有帖子和使用本网站上的内容都必须遵守本网站的条款与条件;使用这些内容的第三方必须同意遵守任何限制或准则,并遵守本网站的条款与条件。赛普拉斯半导体公司及其供应商保留随时对内容和材料、产品、计划和服务进行纠正、删除、修改、增强、改进或其他变更,或者移动或终止任何内容、产品、计划或服务的权利,恕不另行通知。