Search or ask a question

How can I reduce the noise from my air conditioner?

Standard deviation

Linear regression

Air conditioning

Answers from top 7 papers

PDF

Open Access

More filters

Papers (7)	Insight
Open access•Journal Article•DOI Improved microcirculation imaging of human skin in vivo using optical microangiography with a correlation mapping mask. Woo June Choi, Roberto Reif, Siavash Yousefi, Ruikang K. Wang - Show less +3 more 01 Mar 2014-Journal of Biomedical Optics 72 Citations	Here, we propose a method that can significantly reduce this noise.
Journal Article•DOI Review of recent research on interior noise of propeller aircraft J. S. Mixson, Clemans A. Powell - Show less +1 more 01 Nov 1985-Journal of Aircraft 45 Citations	Noise from internal sources, such as air-conditioning systems, may also be important.
Open access•Proceedings Article•DOI Contributions of Different Aeroacoustic Sources toAircraft Cabin Noise Nan Hu, Heino Buchholz, Michaela Herr, Carsten Spehr, Stefan Haxter - Show less +4 more 27 May 2013 23 Citations	Contrary to that the air conditioning system noise is of minor importance.
Journal Article•DOI Sound quality evaluation of air-conditioner noise based on factors of the autocorrelation function Yoshiharu Soeta, Ryota Shimokura - Show less +1 more 01 Sep 2017-Applied Acoustics 27 Citations	The multiple regression analyses indicated that the total subjective annoyance caused by air-conditioner noise can be predicted using the delay time and amplitude of the first maximum peak of the ACF (τ 1 and ϕ 1 ) and the SD of ϕ 1 .
Open access•Journal Article•DOI Disturbance caused by residential air conditioner noise J. S. Bradley 01 Apr 1993-Journal of the Acoustical Society of America 24 Citations	Acceptable limits for air conditioner noise levels can be derived from the dose response curves produced in this study.
Journal Article•DOI On noise indices for domestic air conditioners Shiu Keung Tang, M. Y. Wong - Show less +1 more 06 Jul 2004-Journal of Sound and Vibration 23 Citations	Results show that the Zwicker's loudness level and the percentile level of 90% exceedence are the two major indices for air-conditioner noise assessment.
Journal Article•DOI Sound quality evaluation of air-conditioner noise based on factors of the autocorrelation function Yoshiharu Soeta, Ryota Shimokura - Show less +1 more 01 Sep 2017-Applied Acoustics 27 Citations	The results indicated that the noise characteristics caused by each air conditioner and each operating level are determined by L Aeq , and by the width of the first decay of the ACF, W ϕ (0) , which corresponds to the spectral centroid.

My columns

Related Questions

What are the different ways to reduce noise in a room?5 answersThere are several ways to reduce noise in a room. One approach is to use noise-reducing construction room building structures, which include features such as rotating rods, gears, and sound-proof felt to increase the noise reduction effect and save space. Another method is to create a noise elimination room for specific equipment, such as stamping beds, by using features like observation windows, box doors, damping mechanisms, and telescopic rods with springs to achieve a sealed environment and reduce noise and vibration. Additionally, a sound system and method for noise cancellation can be employed, which involves using microphones and speakers to match and output sound signals based on the input signals from the room's opening. Furthermore, sound absorption technology using sustainable acoustic absorbers can be utilized to control room noise by absorbing sound energy and reducing noise. Finally, a dustproof noise reduction room for stamping production can be implemented, which includes features like sound isolating layers, lifting motors, sound isolating cover plates, and sound isolating baffles to isolate sound and reduce noise.

How can I reduce the noise from my outside air conditioner?8 answers

How can I stop my air cooler from making noise?7 answers

How do I reduce the noise in my HVAC?4 answers

How do I stop my central air conditioner from making noise?8 answers

How do you reduce hair dryer noise?7 answers

See what other people are reading

What is a stream cipher?

A stream cipher is a type of encryption method used in cryptography that operates on individual bits. It involves combining random binary stream keys with plaintext to produce ciphertext. The security of a stream cipher heavily relies on the randomness and unpredictability of the generated key stream. Stream ciphers are known for their high processing speed, ease of implementation, and low error propagation, making them suitable for scenarios like massive data transfer or resource-constrained environments. Various approaches to generating key streams exist, such as utilizing audio noise, nonlinear systems like NLFSR, or combining chaotic systems like Lorenz and Rössler systems. These methods aim to ensure the randomness, security, and resistance to attacks of the generated key streams in stream ciphers.How heat affects students?

Heat affects students in various ways, impacting their health, well-being, and academic performance. Studies from India, South Africa, and the US highlight that high temperatures in classrooms hinder learning, with extreme heat particularly detrimental. Heat exposure can lead to cognitive skill inhibition, reduced learning outcomes, and disparities in academic achievement, especially affecting low-income and minority students. The presence of air conditioning in schools is shown to mitigate the negative effects of heat on student performance. Additionally, exposure to extreme heat during physical education activities can result in cardiovascular strain, discomfort, impaired cognition, and dehydration, affecting students' engagement and well-being. Implementing heat protection policies and strategies in schools is crucial to safeguard students from the adverse impacts of heat exposure.What is the spine pelvis angle in dog?

The spine-pelvis angle in dogs, a critical parameter for understanding canine biomechanics and orthopedic health, is influenced by various factors including breed-specific pelvic limb alignment, pelvic motion during locomotion, and the anatomical configuration of the pelvis. Studies have shown that there is significant variability in the slope of the pelvis across different dog breeds, which could potentially influence the spine-pelvis relationship, although no direct correlation between pelvic slope and femoral subluxation was identified. This variability underscores the complexity of defining a singular "spine-pelvis angle" applicable to all dogs. Kinematic analysis of the canine axial system during locomotion reveals that pelvic and lumbar spine motions are intricately linked, with the greatest intervertebral motions occurring at the lumbosacral junction and adjacent segments. This suggests that the dynamic spine-pelvis angle would vary with gait and motion, further complicating a static measurement. Additionally, the analysis of lumbosacral vertebral motion in German shepherd dogs highlighted the small but significant movements within the lumbosacral region, which play a role in the development of degenerative conditions. The application of three-dimensional imaging techniques has provided more accurate measurements of acetabular geometry, which indirectly affects the spine-pelvis relationship by influencing pelvic orientation. Moreover, breed-specific differences in pelvic limb alignment have been documented, indicating that the spine-pelvis angle may also vary significantly across breeds. Surgical interventions for conditions like canine hip dysplasia aim to modify pelvic orientation, which would inherently alter the spine-pelvis angle, although the effectiveness of these interventions on altering acetabular ventroversion and, by extension, the spine-pelvis relationship, has been variable. Radiographic studies have also highlighted the impact of malpositioning on the measurement of sacroiliac and lumbosacral inclination angles, which are components of the overall spine-pelvis relationship. Dynamic MRI studies and advanced imaging techniques have furthered our understanding of the spine-pelvis relationship by providing insights into changes in lumbosacral angles with varying postures. Lastly, the concept of pelvic incidence, a key factor in sagittal balance regulation, underscores the importance of the anatomical configuration of the pelvis in determining the spine-pelvis relationship, although this has been more thoroughly studied in humans than in dogs. In summary, the spine-pelvis angle in dogs is a complex parameter influenced by breed-specific anatomy, dynamic motion, surgical alterations, and measurement techniques. The variability observed across different studies highlights the need for a nuanced understanding of this relationship, tailored to individual dogs' anatomical and physiological characteristics.How are QT values calculated?

QT values are calculated using various methods based on different contexts. One approach involves utilizing a generalized seismic wavelet to estimate the Q value of each stratum by analyzing changes in the instantaneous frequency at a wavelet envelope peak value. Another method involves calculating a QP offset value for a chroma component in a video sequence based on color space differences, subsequently determining the QP value for improved chroma quality. Additionally, a variable Q value calculation method based on unsteady state deconvolution leverages energy statistics in hyperbolic stripes and linear fitting slope information to enhance Q value estimation reliability and stability. Techniques for quantization parameter (QP) determination in display stream compression (DSC) rely on complexity measures to adjust QP values for current blocks, enhancing compression efficiency.Does insulation effect energy consumption in households?

Insulation plays a significant role in affecting energy consumption in households. Research from multiple studies demonstrates varying impacts of insulation on energy use. Studies in New Zealand and Tajikistan show that retrofitting insulation led to reductions in energy consumption, with one study reporting a 2% decreaseand another indicating savings of 20 to 30% in heating energy. Additionally, findings from a study on building energy efficiency in a Hot Summer and Cold Winter Zone suggest that both interior and exterior wall insulation can influence air-conditioning loads, with external insulation reducing heating load but potentially causing an "anti-insulation" effect during cooling. Moreover, experiments on refrigerator thermodynamics reveal that the positioning and coverage area of vacuum insulation panels significantly impact energy consumption, with potential savings of up to 21%.What is stepwise regression analysis?

Stepwise regression analysis is an iterative statistical technique used to select the most influential variables for a regression model. It involves a step-by-step process of including or excluding independent variables based on their significance, aiming to reduce the dimensionality of data and enhance predictive accuracy. This method is particularly useful in scenarios where the number of predictor variables is large, as it helps in identifying the key variables that impact the dependent variable. By iteratively evaluating the significance of variables, stepwise regression aids in predicting outcomes more effectively, as seen in studies analyzing physiological and biochemical traits in citrus cultivars. Overall, stepwise regression is a valuable tool for variable selection and model optimization in regression analysis.How does familiarity among team members contribute to team performance?

Familiarity among team members significantly impacts team performance in various contexts. Research indicates that familiarity enhances surgical team performance, leading to reduced procedure times. Additionally, familiarity plays a crucial role in academic collaborative teams, where teams consisting of members from different institutions tend to perform better than those from the same institution. However, during times of crisis, such as the COVID-19 pandemic, the importance of familiarity in team performance diminishes, as demonstrated in emergency department settings where familiarity was less critical during crises compared to routine periods. This suggests that while familiarity generally boosts team performance, its impact may vary depending on the specific circumstances and nature of the team's work environment.What other factor contribute to measelse outbreak in Iraq?

The measles outbreak in Iraq can be attributed to various factors. One significant factor is the lack of adequate healthcare infrastructure, as highlighted in Context_3, where Iraq faces challenges such as a shortage of quarantine facilities, limited testing capabilities, and insufficient personal protective equipment. Additionally, the low level of public awareness mentioned in the same context contributes to the spread of measles. Furthermore, sociodemographic characteristics like population density, as discussed in Context_2, play a role in disease transmission. The combination of these factors, along with issues like unclear guidelines for testing and limited access to healthcare services, exacerbates the risk of measles outbreaks in Iraq.What is the quality of individual student through academic performance?

Individual student quality through academic performance is influenced by various factors. Factors such as entry age, gender, entry aggregate, and geographical location have been found to impact academic performance significantly. Additionally, students' performance is not solely determined by objective measures like grades; it is also influenced by subjective and social characteristics, as well as organic, psychological, and cognitive factors. The effectiveness of the educational process at the university level is analyzed using statistical methods, identifying factors affecting the quality of training university students. The study emphasizes the importance of identifying and understanding these factors to predict academic performance accurately and improve the quality of university graduates' training.Scanning spray for metallic removable partial denture form a layer of how much microns on the scanned surface?

The scanning spray for metallic removable partial dentures forms a layer of approximately 1.31 to 1.45 microns on the scanned surface. This layer is crucial for ensuring accurate scanning of the dentures. However, it is essential to note that certain cleansers like 0.05% sodium hypochlorite (NaOCl) and Medical Interporous (MI) may not be suitable for cleaning RPDs as they can lead to surface tarnishes and oxidation, potentially affecting the scanning process. Additionally, when fabricating metal components using metal micro-droplet deposition technology, the overlapping and bonding strength among droplets play a vital role. Optimal scanning steps (WXP and WYL) need to be calculated to achieve good overlapping and bonding strength, resulting in low porosity and high-density metal components.How does customer satisfaction vary between Daraz and Sastodeal in terms of product quality and delivery times?

Customer satisfaction varies between Daraz and Sastodeal concerning product quality and delivery times. Research indicates that product quality significantly influences customer satisfaction. Both companies need to focus on providing high-quality products to enhance customer satisfaction. Additionally, service quality, including fast and on-time delivery, plays a crucial role in customer satisfaction. Daraz and Sastodeal can improve customer satisfaction by ensuring prompt delivery of products. Moreover, customer satisfaction is closely related to perceived quality, which depends on meeting consumer expectations. Therefore, both companies should strive to meet and exceed customer expectations in terms of product quality and delivery times to enhance overall customer satisfaction and loyalty.