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AMAZON
Digital Signal Processing, 4e (Old edition)
₹630
₹1,000
37% OFF
Updated 20th Sep 2026, 04:37 AM
Buy Now
Price Analysis & Buying Guide
F
30 / 100
Not a Deal
Confidence: 100%
Avg Discount
0/28
Recent Discount
15.6/22
Historical Pos.
4.2/20
Low Proximity
0/20
Trend Bonus
10/10
Avg Price
₹485
6M Avg
₹734
All-Time Low
₹200
All-Time High
₹890
vs MRP
↓37%
Price Benchmarks
Lowest Ever
₹200
26th Jan 2019
Highest Ever
₹890
20th Jan 2026
Average Price
₹486
429 data points
3-Month Low
₹550
10th Sep 2026
6-Month Low
₹400
2nd Apr 2026
12-Month Low
₹350
15th Jan 2026
As per price history, Digital Signal Processing, 4e (Old edition)'s lowest price is ₹200. The average price is ₹485. Highest ever price is ₹890. Along with deals, coupons & discounts, you can get it at ₹630. Read our Pricing Disclosure
Product Details
| Product Code | 8131710009 |
|---|---|
| Market Place | amazon.in |
| Store | Amazon |
| Brand | John G. Proakis (Author), Dimitris G. Manolakis (Author) Format: Paperback |
| Rating | 4.4 (307 ratings) |
| Category | Signal Processing |
Frequently Asked Questions
What is the lowest price ever for Digital Signal Processing 4e Old edition?
▶
The all-time lowest price for Digital Signal Processing 4e Old edition was ₹200 recorded on 26th Jan 2019. The current price is 215% higher than this all-time low.
What was the highest price for this product?
▶
The highest recorded price for Digital Signal Processing 4e Old edition was ₹890 on 20th Jan 2026. Right now you save 29.2% compared to the peak price.
What is the average selling price?
▶
Based on 429 data points, the average price of Digital Signal Processing 4e Old edition is ₹486. The current price is 29.7% above average. Consider waiting for a price drop.
What is the 3-month lowest price?
▶
In the last 3 months, the lowest price was ₹550 on 10th Sep 2026.
What is the 6-month lowest price?
▶
The 6-month lowest price for Digital Signal Processing 4e Old edition was ₹400 on 2nd Apr 2026.
Is the price going up or down?
▶
The current price trend for Digital Signal Processing 4e Old edition is Falling. Prices have been decreasing recently, which means you may get an even better deal soon, or the current price could already be a good opportunity. It has been 621 days since the last recorded low price.
How does the current price compare to the average?
▶
The current price is 29.8% above the average price. You may want to wait for a price drop unless you need it urgently.
How much discount is available from MRP?
▶
You're currently saving 37% off the MRP (Maximum Retail Price). A solid discount from the listed retail price.
Should I buy this product now?
▶
Price is high. Score: 30/100 (Grade F) — we recommend waiting. The product has been available at significantly lower prices in the past. Price trend is currently falling.
What does the Deal Score mean?
▶
The Deal Score is a composite rating from 0 to 100 calculated by our algorithm. It considers five factors: Average Discount (how far below the long-term average), Recent Discount (short-term price performance), Historical Position (where the price sits in its all-time range), Low Proximity (closeness to the all-time low), and Trend Bonus (whether prices are falling). Grades are: S (90-100, Exceptional), A (75-89, Great), B (60-74, Good), C (45-59, Fair), D (30-44, Below Average), F (0-29, Not a Deal). This product currently has a score of 30 with 100% confidence.
Where can I buy this product?
▶
Digital Signal Processing 4e Old edition is available on Amazon (amazon.in). Click the Buy Now button above to visit the product page directly. We recommend checking for available coupons and bank offers on the store page for additional savings.