frequency-analysis

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Help with using FFT to determine frequency of an audio sample

I\'m currently developing a percussion tutorial program. The program requires that I can determine what drum is being played, to do this I was going to analyse the frequency of the drum recording and[详细]

2023-01-31 23:25 分类：问答
FFT pitch detection for guitar string

I have simply pitch detection. Input (microphone) data are passed to fft routine, then I\'m looking for a pitch with maximum value It means:[详细]

2023-01-31 20:40 分类：问答
Improving frequency resolution of FFT output by limiting frequency range?

I am new to FFTs and signal processing, so hopefully this question makes sense and/or isn\'t stupid. I would like to perform spectrum analysis on a live audio signal. My goal is to find a good tradeo[详细]

2023-01-22 23:44 分类：问答
how can I statistic my key press frequency and count

I am try to remap my keyboard to type better. But I need to know the frequency of each key include symbol, It wil开发者_如何学运维l be great if include tab shift ctrl. I need all the keypress acounti[详细]

2023-01-18 10:27 分类：问答
SQL: how to get a weighted count using GROUP BY?

How can I make a query like: select myvalue, count() as freq fro开发者_Python百科m mytable group by myvalue;[详细]

2023-01-17 22:24 分类：问答
SQL query: How to count frequency over a many-to-many relation?

I have a table for blogposts and a table for tags, with a many-to-many relation between them. How can I extract the most frequent tag across a subset of blogposts? (e.g. only those from the past year[详细]

2023-01-14 02:54 分类：问答
Word Frequency in text using Python but disregard stop words

This gives me a frequency of words in a text: fullWords = re.findall(r\'\\w+\', allText) d = defaultdict(int)[详细]

2023-01-05 10:35 分类：问答
Is it possible to programmatically edit a sound file based on frequency?

Just wondering if it\'s possible to go through a flac, mp3, wav, etc file and edit portions, or the entire file by removing sections based on a specific frequency range?[详细]

2023-01-01 02:56 分类：问答
Capture Sound from Mic/Headphone and trigger action at perticular frequency

I am using .NET 3.5. I need to Capture Sound from Mic/Headphone and trigger action at particular (not exact)frequency (Need to perform some action when player hits ball with stick 开发者_开发问答whil[详细]

2022-12-24 17:01 分类：问答
How to determine the frequency of the input recorded voice in iphone?

I am new to iphone development.I am doing research on voice recording in i开发者_开发知识库phone .I have downloaded the \"speak here \" sample program from Apple.I want to determine the frequency of m[详细]

2022-12-22 02:39 分类：问答