Directive

Community members in Bellevue will soon see new tasers and body-worn cameras on patrol officers in the city as the Bellevue Police Department integrates new high-tech gear into its law enforcement practices. The department is launching a patrol officer body camera program using ‘AXON Body 4’ cameras and an equipment upgrade to ‘Taser 10’ tasers in early 2024. These advanced tools are expected to bolster transparency, accountability and safety within the Bellevue community.

To learn even more about directional microphones, we suggest Arthur Fox’s article, “A Complete Guide To Directional Microphones (With Pictures)”.

Direction

A directional microphone is a microphone that picks up sounds primarily from one specific direction and it can help reduce noise and isolate sound sources. However, it can also have some drawbacks, such as unnatural sound quality. Therefore, you should always consider your recording goals and environment before choosing a directional microphone.

A directional microphone uses different techniques to manipulate how sound waves reach its diaphragm (the part that vibrates in response to sound). Depending on how the diaphragm is designed and positioned, it can be more or less sensitive to sounds coming from different directions.

However, it also has some drawbacks you should know before choosing one.  A directional microphone can produce a less natural sound than an omnidirectional microphone. Since a directional microphone rejects sounds coming from certain directions, it can also lose some of the natural ambiance and reverberation of the recording environment. This can make the sound more dry and dull, especially if you are recording in a large or acoustically rich space. To compensate for this, you can use an omnidirectional microphone as a secondary source to capture the room sound and blend it with the directional microphone signal.

Officers are being trained this month with the new tasers and BPD anticipates adding more than 200 Taser 10s to officers’ equipment resources by the end of February. Also, a select group of patrol officers will be field-testing the body cameras in early February. BPD anticipates deploying the cameras among the full team of commissioned patrol officers by the end of March.

directional中文

King County's Solid Waste Division will temporarily pause free storm debris collection at its transfer stations until Dec. 7 due to lack of capacity and the overwhelming demand for disposal services following the region’s recent windstorm. King County expects to resume free collection of yard waste and woody debris at its transfer stations on Saturday, Dec. 7.  Get more info.

Directionality meaning in biology

Before we go over what a directional microphone is, let us first go over what microphone directionality is. The directionality of a microphone is the direction(s) from which a microphone can pick up incoming sound. Sounds can come to a microphone from all directions – the front of the microphone, the back of the microphone, or the sides – and a microphone will pick up these sounds differently based on its directional characteristics or directionality. A microphone can pick up sounds with high sensitivity coming into the front of it but not sounds to the sides and rear. Another microphone may pick up sounds well from the front and rear but not the sides. Another may pick up sounds well from all sides. There are many different combinations.

Another reason to use a directional microphone is to create a sense of space and depth in your recordings. For example, suppose you are recording a musical performance with multiple instruments. In that case, you can use different types of directional microphones to capture different aspects of the sound. You could use an omnidirectional microphone to record the overall ambiance of the room, a bidirectional microphone to record the stereo image of the main instrument, and a cardioid microphone to record the vocals or solo parts. By mixing these different tracks together, you can create a more realistic and immersive sound experience. Perfect!

This is an artificial-intelligence (AI) chatbot designed to provide general information about various city topics. If you are having an emergency of any kind, please call 911 immediately. The chatbot is still learning about all of our services and may occasionally provide an incorrect answer.

The AXON Body 4 body cameras bring an array of advanced features to Bellevue, including high-definition recording capabilities, improved low-light performance and an expanded field of view compared with most police body cameras in use today. Notably, these cameras boast a two-way communication feature, facilitating seamless audio and video interactions between officers and command centers, while enhancing real-time situational awareness and response coordination.

Directionalcar

The way that a microphone captures sounds from these different directions is called its pickup pattern.  Not sure what this is? Don’t worry! We’ve included a list below of the most common types of microphone pickup patterns.

Directionalderivative

One common technique is to add ports on both sides of the diaphragm. Sounds that come from both sides, which are most often background buzz, cancel each other out and allow the listener to concentrate on sounds coming from one direction. The most advanced directionality comes from using multiple microphones.

The Bellevue Police Foundation contributed to the purchase of this new gear through a donation to Bellevue Police. The foundation is a 501(c)3 nonprofit whose mission is to foster community support to fund equipment purchases, training and public recognition for officers in Bellevue.

Another common technique is using an interference tube before the diaphragm. This long tube with slots along its length allows sound waves to enter at different angles. The sound waves interfere with each other inside the tube and create different patterns of pressure on the diaphragm depending on their direction. This way, sounds from directly in front of the tube are relatively unaffected (not amplified as some believe), while sounds coming from other directions are attenuated.  A microphone with an interference tube is commonly referred to as a “shotgun” microphone.

The addition of body-worn cameras to Bellevue’s police department equipment is the culmination of years of preparation. The department engaged the community and its police advisory councils in 2021 and offered additional information about the technology on EngagingBellevue and the police page. In addition, use of body cameras for officers was one of the recommendations submitted by an independent review agency OIR after the mayor pledged to review the city’s police use of force policies in 2020.

Directionalhypothesis

Directionality

A directional microphone is a microphone that picks up sounds primarily from a specific direction.  An omnidirectional microphone is not considered to be directional.  The more focused a microphone is on one particular direction, the more directional it is.

If you are interested in audio recording, you may have come across the term “directional microphone”. But what does it mean, and why is it important? In this blog post, we will explain what a directional microphone is, how it works, and its advantages and disadvantages.

As we have seen, a directional microphone can offer many benefits for audio recording, such as noise reduction, sound isolation, and spatial enhancement.  Another advantage of a directional microphone is that it can help to reduce feedback. Feedback is the annoying squealing sound that occurs when a microphone picks up its own output from a speaker or monitor.  Since a directional microphone is more sensitive to sounds coming from a specific direction, it can be located closer to a speaker or monitor without feedback as long as it is pointed AWAY from the speaker.

There’s nothing more frustrating than picking up background noise, right? With this in mind, the main reason to use a directional microphone is to reduce and/or remove unwanted noise and focus on the desired sound source. For example, if you are recording an interview in a noisy environment, use a highly directional microphone that can reject sounds coming from behind or beside the speaker. This way, you can capture their voice more clearly and avoid picking up distracting background noises!

“The Bellevue Police Department remains steadfast in its commitment to utilizing technology that fosters public safety, transparency and trust within the community,” said Police Chief Wendell Shirley. “The implementation of AXON Body 4 body cameras and Taser 10 tasers underscores our dedication to providing top-tier service and maintaining the highest standards of professionalism, and we are thankful to our partners in the community who helped make this equipment purchase a reality.”

To learn more about the different types of microphone, please refer to our article, “What Are The 3 Most Common Types of Microphone Construction?”

The introduction of Taser 10 tasers represents a significant update to the department's less-lethal options. These state-of-the-art devices incorporate enhanced accuracy, range, safety protocols and an intuitive interface, ensuring effective responses to incidents while prioritizing the safety of all involved parties. Features of the Taser 10 tasers include:

For a more comprehensive explanation of these pickup patterns refer to our article: “What Are The 5 Most Common Microphone Pickup Patterns?”.