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移動隔音房

隔音艙是新興的隔音產品，利用了傳統房中房 (box in box) 的隔音原理，有效地提供人們一個安靜的環境來工作和休息。

如下紀錄了我們如何解決現有的各種問題，並引入香港住宅中。

(下圖是旺角店的陳列室)

隔音艙運輸上樓問題

為了引入這種產品，首先我們要解決的就是運輸上樓的問題。

市面上的移動隔音房，本身不是為香港樓宇設計，他的高度已經不能放在8尺樓底高的住宅中。

而且，香港的電梯十分細，貨是進不到電梯的。於是，我們需要重新設計，把這個產品模組化，另外造模，令到每件配件都可以成功進入香港的電梯中。

(圖中2023年，為北角住宅客戶收貨的相片）

隔音房的通風問題

好了，解決了運輸上的問題，接下來就是最難搞的技術問題。市面上的隔音艙存在三種問題：

1. 使用小型風扇，房中二氧化碳含量嚴重超標：

這是大部份隔音房工廠會使用的方法。

其實這種風扇就是平時我們電腦用來散熱的同一種。

大家都可以想像到了，連電腦主機的箱只有不到半平方呎，

也散不到太多熱力，不用說這麼大型的隔音 Box了。

(下圖是使用小型風扇的情況下，坐了5分鐘，二氧化碳含量已到1500ppm)

註：1000ppm為國際標準，我坐了5分鐘已難以呼吸，停止測試

2. 使用大型抽風機，進風口大，隔音少於20 dB；

有些隔音艙直接加裝了大抽氣扇。這個不用數據，用常理都可以想到，在隔音房中開一個比藍球還大的洞，就已經失去了隔音的意義了。

 3. 使用強力風機，風噪和馬達聲非常吵耳。

有些工廠使用馬力大的抽風機，開一個小洞口做通風。

雖然解決了鮮風和隔音的問題，但又產生了另外一個問題，就是非常嘈的馬達聲音，噪音高達60多分貝，仿如置身於工廠中一樣。

(下圖為拜訪上海 Tesla 超級工廠的隔音零件測試室）

流動隔音房的核心問題

我們走訪了國內幾乎所有製造這個產品的工廠，沒有一間工廠能同時解決這個問題。

所以，核心問題就在於通風了。能通風，又不隔音，如果風機太大，風噪又十分吵耳。

核心問題是，我們要造一個能隔音，夠鮮風，又靜音的通風系統出來。

隔音解決過程

為了解決這個問題，我們從各個角度進行了研究。

幸好店長家中兩代人，都是為發展商打工的工程師，就只有店長出來搞音樂。

二哥是新世界發展的通風顧問，提供了寶貴的建議。

後來因為工程朋友的引薦，去了上海Tesla的超級工廠參考他們的零件測試隔音房，並向他們學習他們的製造工藝和使用材料。

在這些建議的幫助下，我們進行了大量的測試和實驗，以確定最佳的隔音艙設計和通風系統。

現場實測

經過18個月的研究，40多次的測試，我們終於可以做到，二氧化碳含量少於1000ppm，風噪少於30 dB，而且隔音超過30 dB。

系統是如何設計，就不多說了，直接看結果：

(下圖是8小時測試，二氧化碳含量只有 612-779 ppm)

這種創新的通風系統，它不僅能夠保持室內空氣新鮮，而且可以避免房間中的二氧化碳含量過高。

隔音材料和隔音結構，以最大程度地減少外界噪音的干擾。而且機器的噪音和震動都過標準。

(下圖為旺角店陳列，於隔音房中拍攝）

隔音艙的法例標準

是否一定要做到700ppm? 其實不一定的，2000ppm以下即使腦部缺氧，都不會有即時生命危險，法例也沒有對於這種新興產品有明文的規管。

但是，一件產品要安全有效，我們才能賣出去，也是我們的原則。

電結他的種類

電結他有多種種類，包括單則電結他、雙則電結他和半空心電結他等。每種電結他都有自己獨特的聲音和風格，因此在選擇時要根據自己的音樂風格和口味做出決定。

頸部的形狀

頸部的形狀也是非常重要的因素，它會影響到你的手指的運動和握持，從而影響你的演奏水平。電結他的頸部形狀分為"C"形、"V"形、"U"形和"細頸"等多種，選擇時要根據自己的手型和握持習慣做出決定。

拾音器的種類

拾音器是電結他的重要部分，它決定了樂器的聲音質量和音色。目前市場上有多種拾音器，包括磁鐵式、聚酯薄膜式、鋰離子電池式等，每種拾音器都有自己的優缺點。要根據自己的需求和預算做出選擇。

木材的種類

電結他的聲音和音質也受到木材種類的影響。目前市場上主要有楓木、桃花心木、黑檀木等多種木材可供選擇。不同的木材具有不同的音色和聲音特點，選擇時要根據自己的音樂風格和口味做出決定。

預算

最後一個因素是預算。電結他的價格範圍非常廣泛，從幾百元到幾萬元不等。要根據自己的預算和需求做出選擇，不要過度。

常見問題

1. 電結他和原聲結他有什麼區別？

2. 電結他和吉他效果器有什麼區別？

3. 電結他需要哪些配件？

4. 新手如何學習彈奏電結他？

5. 買電結他需要注意哪些問題？

住宅樓上噪音是一種結構噪音，這種噪音是由於共鳴效應所造成的。

當音頻在物體中傳播時，物體會引起共震，造成噪音。

在住宅樓上，這種共震是由於上層的噪音通過建築物的結構而傳到下層房間的現象。

然而，加裝隔音天花並不能有效地解決這個問題。

因為結構噪音是由整個建築物的結構引起的，而不是單單由天花造成的。

因此，加裝隔音天花只能減少極少量的噪音，但不能完全消除噪音。

唯一有效的解決方法是「房中房」的方法。

這種方法是指將建築物的結構分離，以防止噪音通過結構震動而傳播。

房中房可透過兩種方法實現：

1. 隔音房中房裝修

這種方法非常昂貴及耗時，常用於演奏廳，戲院。

2. 模組化房中房

數以百萬計的裝修，用數萬元即可解決，按下圖連結參考：

總之，住宅樓上的噪音問題是由共鳴效應造成的，加裝隔音天花並不能解決這個問題，唯一有效的解決方法是「房中房」的方法。

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Education center franchise, franchising,

Refers to a number of individual shop operators throughguidance,operate the same brand.

Operators can quickly acquire business knowledge and reduce startup time.

Among them, how much the brand is worth determines the franchise fee receivable by the head office.

This article describes three of the simplest estimation methods.

(1) Duan Jinscales

The total value of advertising, marketing, human resources, etc. that the brand has put in the past.

For example, assuming that Feiteng Education started in 2007 and put 1 million online advertisements for branding every year,

By 2017, the brand valuation is 1 million x 10 years = 10 million.

shortcoming:

This method is simple and crude, because Feiteng Music's total investment of 10 million is not necessarily the most efficient.

10 million in exchange may only be less than 1 million efficiency.

Conversely, brand value may also be underestimated,

Because 10 million may generate the efficiency of 100 million invested by other companies.

Moreover, this method is based on cost, and the brand's great value lies in future expectations, not past history.

However, this can give prospective franchise operators a basic concept,

A more extreme example, a brand that has not invested enough 100,000 yuan, but charges 100,000 yuan for the franchise fee,

We will think: Is it reasonable to join this brand?

(2) Cut off the heavy practice trick

Starting today, how much capital do you need to re-establish a Feiteng Education brand?

If it is 1 million, then the brand of Feiteng Music (Goodview) is worth 1 million.

shortcoming:

This approach is also cost-driven and fails to reflect expectations for the future.

Also, there is very little possibility of recreating an identical brand to compare,

The value of a brand lies in its uniqueness, which is difficult to compare.

However, this can give prospective franchise operators a basic concept,

That is, in Management Accounting,

Which is better buy or make decisions?

(3) There is no comparison, no harm method

A product with a brand name and an unprinted selling price.

For example, a smart phone sells for 1,000 yuan on Taobao.

The phone, with the Apple Logo, can sell for 10,000 yuan.

The company sells 100 products a year.

The brand valuation is the difference (9,000 yuan x 100 = 900,000)

Of course, the calculation method needs to include the brand's market share, repeat purchase rate, future growth rate, and so on.

shortcoming:

This method is more accurate, but requires a lot of market data.

Moreover, there are many factors that affect the selling price of products, such as market demand, parts supply, economic cycle, etc., and brand is only one of them.

However, this can give prospective franchise operators a basic concept,

"with you or without you」Is there a difference?

Extended reading (3) Requirements for joining Feiteng Music

There are three ways to start running the education industry.

(one) topExisting Education Center

(two)joinexistingEducation Center

(three)Create your owna brand newEducation Center

This article will analyze the differences between the three and the details that need attention.

(1) Top Education Center

take overLike other companies, the education center's selling price is the most critical part.

This will affect future payback cycles, entrepreneurial cash flow, and more. The ask price consists of two key elements:

(A) Asset transfer (Duanjin Scale)

The piano shop has 10 straight pianos worth 100,000 yuan, decoration of 100,000 yuan, and making money tools of 100,000 yuan.

The net asset value of the music company is 300,000.

(B) P/E ratio (future return time)

The music store earns 100,000 a month, the selling price is $1.2 million, and the payback period is one year (P/E ratio = 1)

Of course, this is the simplest and crudest method of valuation. There should be many elements in it.

Including goodwill, future growth expectations, etc.

But this is the most basic concept of acquiring a company.

The devil is in the details:

1. In the calculation of (A) Asset transfer, is there any depreciation calculation?

The purchase price of the instrument, not equal to the current value.

2. It is the assets that bring cash income, the opposite is the liabilities.

If the piano store itself does not have a certain ability to make money, 300,000 is just a liability.

3. In (B)In the price-earnings ratio calculation, whether the income of the music company passes through yourdue diligence(due diligence)?

Before purchasing a company, the buyer must consult the company's audit report.

In order to know whether the company you buy has debts, whether the assets are overvalued, the company's ability to make money, and so on.

A qualifying audit report, roughly like this:

Even many listed companies have a lot of water in their accounts after being audited by the big accounting building.

However, a Hong Kong limited company is required to file with the Inland Revenue Department annually,

An audit report issued by a qualified auditor.

Checking the audit report is the most basic due diligence before buying a company.

Extended reading (2) How much is the brand worth when joining an existing chain education center?

Extended reading (3) Requirements for joining Feiteng Education

Education center franchise, piano franchising,

Refers to a number of individual shop operators throughguidance,operate the same brand.

Operators can quickly acquire business knowledge and reduce startup time.

Among them, how much the brand is worth determines the franchise fee receivable by the head office.

This article describes three of the simplest estimation methods.

(1) Duan Jinscales

The total value of advertising, marketing, human resources, etc. that the brand has put in the past.

For example, assuming that Feiteng Music started in 2007 and put 1 million online advertisements for branding every year,

By 2017, the brand valuation is 1 million x 10 years = 10 million.

shortcoming:

This method is simple and crude, because Feiteng Music's total investment of 10 million is not necessarily the most efficient.

10 million in exchange may only be less than 1 million efficiency.

Conversely, brand value may also be underestimated,

Because 10 million may generate the efficiency of 100 million invested by other companies.

Moreover, this method is based on cost, and the brand's great value lies in future expectations, not past history.

However, this can give prospective franchise operators a basic concept,

A more extreme example, a brand that has not invested enough 100,000 yuan, but charges 100,000 yuan for the franchise fee,

We will think: Is it reasonable to join this brand?

(2) Cut off the heavy practice trick

Starting today, how much money do you need to re-establish a Feiteng Music brand?

If it is 1 million, then the brand of Feiteng Music (Goodview) is worth 1 million.

shortcoming:

This approach is also cost-driven and fails to reflect expectations for the future.

Also, there is very little possibility of recreating an identical brand to compare,

The value of a brand lies in its uniqueness, which is difficult to compare.

However, this can give prospective franchise operators a basic concept,

That is, in Management Accounting,

Which is better buy or make decisions?

(3) There is no comparison, no harm method

A product with a brand name and an unprinted selling price.

For example, a smart phone sells for 1,000 yuan on Taobao.

The phone, with the Apple Logo, can sell for 10,000 yuan.

The company sells 100 products a year.

The brand valuation is the difference (9,000 yuan x 100 = 900,000)

Of course, the calculation method needs to include the brand's market share, repeat purchase rate, future growth rate, and so on.

shortcoming:

This method is more accurate, but requires a lot of market data.

Moreover, there are many factors that affect the selling price of a product, such as market demand, parts supply, economic cycle, etc., and brand is only one of them.

However, this can give prospective franchise operators a basic concept,

"with you or without you」Is there a difference?

Extended reading (3) Requirements for joining Feiteng Music

There are three ways to start a piano business.

(one)topExisting piano shop

(two)joinExisting Chain Music Stores

(three)Create your ownA brand new piano shop

This article will analyze the differences between the three and the details that need attention.

(1) Top piano shop

Like other companies, the selling price is the most critical part of taking over the top.

This will affect future payback cycles, entrepreneurial cash flow, and more. The ask price consists of two key elements:

(A) Asset transfer (Duanjin Scale)

The piano shop has 10 straight pianos worth 100,000 yuan, decoration of 100,000 yuan, and making money tools of 100,000 yuan.

The net asset value of the music company is 300,000.

(B) P/E ratio (future return time)

The music store earns 100,000 a month, the selling price is $1.2 million, and the payback period is one year (P/E ratio = 1)

Of course, this is the simplest and crudest method of valuation. There should be many elements in it.

Including goodwill, future growth expectations, etc.

But this is the most basic concept of acquiring a company.

The devil is in the details:

1. In the calculation of (A) Asset transfer, is there any depreciation calculation?

The purchase price of the instrument, not equal to the current value.

2. It is the assets that bring cash income, the opposite is the liabilities.

If the piano store itself does not have a certain ability to make money, 300,000 is just a liability.

3. In (B)In the price-earnings ratio calculation, whether the income of the music company passes through yourdue diligence(due diligence)?

Before purchasing a company, the buyer must consult the company's audit report.

In order to know whether the company you buy has debts, whether the assets are overvalued, the company's ability to make money, and so on.

A qualifying audit report, roughly like this:

Even many listed companies have a lot of water in their accounts after being audited by the big accounting building.

However, a Hong Kong limited company is required to file with the Inland Revenue Department annually,

An audit report issued by a qualified auditor.

Checking the audit report is the most basic due diligence before buying a company.

Extended reading (2) How much is the brand worth when joining an existing music chain?

Extended reading (3) Requirements for joining Feiteng Music